{"id":2143,"date":"2022-12-05T17:11:16","date_gmt":"2022-12-05T22:11:16","guid":{"rendered":"https:\/\/biosrhythm.com\/?p=2143"},"modified":"2025-12-04T15:52:46","modified_gmt":"2025-12-04T20:52:46","slug":"typewriter-plotters","status":"publish","type":"post","link":"https:\/\/biosrhythm.com\/?p=2143","title":{"rendered":"Typewriter Plotters"},"content":{"rendered":"\n<p>Did you know there were typewriters that used ball point pens to draw not just text but also graphics? I\u2019ve collected several of these over the years. Read on to discover a world that you didn&#8217;t know existed.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-2 is-cropped\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114631913115650-FJGHZcTXsAIsyUQ.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114631913115650-FJGHZcTXsAIsyUQ-600x800.jpg\" alt=\"\" data-id=\"2144\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114631913115650-FJGHZcTXsAIsyUQ.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2144#main\" class=\"wp-image-2144\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114631913115650-FJGHZcTXsAIsyUQ-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114631913115650-FJGHZcTXsAIsyUQ-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114631913115650-FJGHZcTXsAIsyUQ-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114631913115650-FJGHZcTXsAIsyUQ.jpg 900w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114631913115650-FJGHZdzXoAQUuKw.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114631913115650-FJGHZdzXoAQUuKw-600x800.jpg\" alt=\"\" data-id=\"2145\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114631913115650-FJGHZdzXoAQUuKw.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2145#main\" class=\"wp-image-2145\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114631913115650-FJGHZdzXoAQUuKw-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114631913115650-FJGHZdzXoAQUuKw-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114631913115650-FJGHZdzXoAQUuKw-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114631913115650-FJGHZdzXoAQUuKw.jpg 900w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<!--more-->\n\n\n\n<p>Typewriter plotters could act as a normal typewriter in that you could type on the keys and have the text printed on the page. The difference is it would use a tiny ball point pen to &#8220;draw&#8221; the text, character by character, onto the page. It&#8217;s mesmerizing to watch!  Many also included the ability to print graphs and bar charts, although in practice is was likely cumbersome. In addition, some models had the ability to connect to a computer to print text or even custom graphics.<\/p>\n\n\n\n<h2>Panasonic <strong>RK-P400C Penwriter<\/strong><\/h2>\n\n\n\n<p>Panasonic made three models. The top shelf was the <strong>RK-P400C Penwriter<\/strong> which included the RS-232 port built in for computer control. They also came with a white pen for error correcting.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-4 is-cropped\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289747959454801925-EeYa7bMWkAESumV-600x800.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289747959454801925-EeYa7bMWkAESumV-600x800.jpg\" alt=\"\" data-id=\"2147\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2147#main\" class=\"wp-image-2147\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289747959454801925-EeYa7bMWkAESumV-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289747959454801925-EeYa7bMWkAESumV-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289747959454801925-EeYa7bMWkAESumV-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289747959454801925-EeYa7bMWkAESumV.jpg 900w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289747959454801925-EeYa7bMWkAA0gBk-600x800.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289747959454801925-EeYa7bMWkAA0gBk-600x800.jpg\" alt=\"\" data-id=\"2146\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2146#main\" class=\"wp-image-2146\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289747959454801925-EeYa7bMWkAA0gBk-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289747959454801925-EeYa7bMWkAA0gBk-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289747959454801925-EeYa7bMWkAA0gBk-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289747959454801925-EeYa7bMWkAA0gBk.jpg 900w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289747959454801925-EeYa7bSX0AET97C.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289747959454801925-EeYa7bSX0AET97C-600x800.jpg\" alt=\"\" data-id=\"2149\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289747959454801925-EeYa7bSX0AET97C.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2149#main\" class=\"wp-image-2149\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289747959454801925-EeYa7bSX0AET97C-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289747959454801925-EeYa7bSX0AET97C-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289747959454801925-EeYa7bSX0AET97C-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289747959454801925-EeYa7bSX0AET97C.jpg 900w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289747959454801925-EeYa7bMXgAAdi0A-840x630.jpg\"><img loading=\"lazy\" width=\"840\" height=\"630\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289747959454801925-EeYa7bMXgAAdi0A-840x630.jpg\" alt=\"\" data-id=\"2148\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2148#main\" class=\"wp-image-2148\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289747959454801925-EeYa7bMXgAAdi0A-840x630.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289747959454801925-EeYa7bMXgAAdi0A-300x225.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289747959454801925-EeYa7bMXgAAdi0A-768x576.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289747959454801925-EeYa7bMXgAAdi0A.jpg 1200w\" sizes=\"(max-width: 840px) 100vw, 840px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<p>Here&#8217;s a video of the Panasonic RK-P400C Penwriter typewritter plotter drawing a design under computer control via RS-232. The <a rel=\"noreferrer noopener\" href=\"https:\/\/archive.org\/details\/panasonic-rk-p-400-c-manual\" target=\"_blank\">manual is available from Archive.org<\/a>.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"The Panasonic RK-P400C Penwriter typewritter plotter drawing under computer control via RS-232\" width=\"646\" height=\"363\" src=\"https:\/\/www.youtube.com\/embed\/7IGrUeB100I?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p>Mona Triangles on a Panasonic RK-P400C typewriter plotter.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-2 is-cropped\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289899321387671553-EeakmEoX0AAeFel.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289899321387671553-EeakmEoX0AAeFel-600x800.jpg\" alt=\"\" data-id=\"2152\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289899321387671553-EeakmEoX0AAeFel.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2152#main\" class=\"wp-image-2152\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289899321387671553-EeakmEoX0AAeFel-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289899321387671553-EeakmEoX0AAeFel-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289899321387671553-EeakmEoX0AAeFel.jpg 768w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289899321387671553-EeakmElX0AIUkfh.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289899321387671553-EeakmElX0AIUkfh-600x800.jpg\" alt=\"\" data-id=\"2150\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289899321387671553-EeakmElX0AIUkfh.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2150#main\" class=\"wp-image-2150\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289899321387671553-EeakmElX0AIUkfh-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289899321387671553-EeakmElX0AIUkfh-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1289899321387671553-EeakmElX0AIUkfh.jpg 768w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<h2>Panasonic RK-P440 Penwriter<\/h2>\n\n\n\n<p>A lower end model was the Panasonic RK-P440 Penwriter. It had a computer input but required the K100 external interface. Otherwise functionally the same: draws texts as well as business graphics with 4 color ballpoint pens. Portable using 6 C batteries.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-4 is-cropped\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-Ky0XYAA4SsV.jpg\"><img loading=\"lazy\" width=\"840\" height=\"630\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-Ky0XYAA4SsV-840x630.jpg\" alt=\"\" data-id=\"2153\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-Ky0XYAA4SsV.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2153#main\" class=\"wp-image-2153\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-Ky0XYAA4SsV-840x630.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-Ky0XYAA4SsV-300x225.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-Ky0XYAA4SsV-768x576.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-Ky0XYAA4SsV.jpg 1200w\" sizes=\"(max-width: 840px) 100vw, 840px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-Ky1XYAcsfUb.jpg\"><img loading=\"lazy\" width=\"840\" height=\"630\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-Ky1XYAcsfUb-840x630.jpg\" alt=\"\" data-id=\"2154\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-Ky1XYAcsfUb.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2154#main\" class=\"wp-image-2154\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-Ky1XYAcsfUb-840x630.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-Ky1XYAcsfUb-300x225.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-Ky1XYAcsfUb-768x576.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-Ky1XYAcsfUb.jpg 1200w\" sizes=\"(max-width: 840px) 100vw, 840px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-KyyW4AAfBeH.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-KyyW4AAfBeH-600x800.jpg\" alt=\"\" data-id=\"2155\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-KyyW4AAfBeH.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2155#main\" class=\"wp-image-2155\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-KyyW4AAfBeH-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-KyyW4AAfBeH-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-KyyW4AAfBeH-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-KyyW4AAfBeH.jpg 900w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-KyzW4AACgO9.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-KyzW4AACgO9-600x800.jpg\" alt=\"\" data-id=\"2156\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-KyzW4AACgO9.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2156#main\" class=\"wp-image-2156\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-KyzW4AACgO9-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-KyzW4AACgO9-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-KyzW4AACgO9-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231591753158995969-ERd-KyzW4AACgO9.jpg 900w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<p>The Panasonic K-100 interface box connected to the typewriter via a DE-9 port on the side and connected to your computer via either DB-25 RS-232 or Centronics parallel.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-2 is-cropped\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231602677060161538-EReIGwFWkAI6xzD.jpg\"><img loading=\"lazy\" width=\"840\" height=\"630\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231602677060161538-EReIGwFWkAI6xzD-840x630.jpg\" alt=\"\" data-id=\"2157\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231602677060161538-EReIGwFWkAI6xzD.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2157#main\" class=\"wp-image-2157\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231602677060161538-EReIGwFWkAI6xzD-840x630.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231602677060161538-EReIGwFWkAI6xzD-300x225.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231602677060161538-EReIGwFWkAI6xzD-768x576.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231602677060161538-EReIGwFWkAI6xzD.jpg 1024w\" sizes=\"(max-width: 840px) 100vw, 840px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231602677060161538-EReIGwGX0AApEa3.jpg\"><img loading=\"lazy\" width=\"800\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231602677060161538-EReIGwGX0AApEa3-800x800.jpg\" alt=\"\" data-id=\"2158\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231602677060161538-EReIGwGX0AApEa3.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2158#main\" class=\"wp-image-2158\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231602677060161538-EReIGwGX0AApEa3-800x800.jpg 800w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231602677060161538-EReIGwGX0AApEa3-300x300.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231602677060161538-EReIGwGX0AApEa3-150x150.jpg 150w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231602677060161538-EReIGwGX0AApEa3-768x768.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1231602677060161538-EReIGwGX0AApEa3.jpg 1024w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<p>Here\u2019s a video of the Panasonic RK-P400 Penwriter plotting the demo page using four ballpoint pens.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Panasonic Penwriter RK-P440 plotting the demo page using four ballpoint pens.\" width=\"646\" height=\"363\" src=\"https:\/\/www.youtube.com\/embed\/IzFLRYFSGbQ?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2>Panasonic RK-P200C Penwriter<\/h2>\n\n\n\n<p><strong>Panasonic<\/strong> also had the basic <strong>RK-P200C Penwriter<\/strong> which removed any computer control but kept the ability to do standalone business graphics. Pic from eBay.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-1 is-cropped\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114643560652804-FJGHabyWUAEA88T.jpg\"><img loading=\"lazy\" width=\"588\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114643560652804-FJGHabyWUAEA88T-588x800.jpg\" alt=\"\" data-id=\"2159\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114643560652804-FJGHabyWUAEA88T.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2159#main\" class=\"wp-image-2159\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114643560652804-FJGHabyWUAEA88T-588x800.jpg 588w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114643560652804-FJGHabyWUAEA88T-221x300.jpg 221w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114643560652804-FJGHabyWUAEA88T-768x1045.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114643560652804-FJGHabyWUAEA88T.jpg 882w\" sizes=\"(max-width: 588px) 100vw, 588px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<h2><strong>Silver Reed EB50<\/strong><\/h2>\n\n\n\n<p>There were other ballpoint pen based typewriters, such as this <strong>Silver Reed EB50<\/strong>. It draws text and business graphics too but this one has a parallel port to act as a plotter. I added support for it to my workflow and it\u2019s a very good.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-4 is-cropped\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1233005798957121536-ERyEPFdXUAQHSzS.jpg\"><img loading=\"lazy\" width=\"840\" height=\"630\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1233005798957121536-ERyEPFdXUAQHSzS-840x630.jpg\" alt=\"\" data-id=\"2162\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1233005798957121536-ERyEPFdXUAQHSzS.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2162#main\" class=\"wp-image-2162\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1233005798957121536-ERyEPFdXUAQHSzS-840x630.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1233005798957121536-ERyEPFdXUAQHSzS-300x225.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1233005798957121536-ERyEPFdXUAQHSzS-768x576.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1233005798957121536-ERyEPFdXUAQHSzS.jpg 1024w\" sizes=\"(max-width: 840px) 100vw, 840px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1233005798957121536-ERyEPFeW4AAqSKV.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1233005798957121536-ERyEPFeW4AAqSKV-600x800.jpg\" alt=\"\" data-id=\"2163\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1233005798957121536-ERyEPFeW4AAqSKV.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2163#main\" class=\"wp-image-2163\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1233005798957121536-ERyEPFeW4AAqSKV-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1233005798957121536-ERyEPFeW4AAqSKV-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1233005798957121536-ERyEPFeW4AAqSKV.jpg 768w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1233005798957121536-ERyEPFdXUAEYfaC.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1233005798957121536-ERyEPFdXUAEYfaC-600x800.jpg\" alt=\"\" data-id=\"2161\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1233005798957121536-ERyEPFdXUAEYfaC.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2161#main\" class=\"wp-image-2161\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1233005798957121536-ERyEPFdXUAEYfaC-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1233005798957121536-ERyEPFdXUAEYfaC-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1233005798957121536-ERyEPFdXUAEYfaC.jpg 768w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1233005798957121536-ERyEPFdWkAEoi-G.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1233005798957121536-ERyEPFdWkAEoi-G-600x800.jpg\" alt=\"\" data-id=\"2160\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1233005798957121536-ERyEPFdWkAEoi-G.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2160#main\" class=\"wp-image-2160\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1233005798957121536-ERyEPFdWkAEoi-G-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1233005798957121536-ERyEPFdWkAEoi-G-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1233005798957121536-ERyEPFdWkAEoi-G.jpg 768w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<p>Here\u2019s a video of the Silver Reed Colour PenGraph EB50 plotting Schotter. I\u2019ll admit it\u2019s strange seeing this on something with a keyboard.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Silver Reed Colour PenGraph EB50 plotting Schotter\" width=\"646\" height=\"363\" src=\"https:\/\/www.youtube.com\/embed\/Zg134DDUvJA?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2><strong>Smith Corona<\/strong> <strong>Graphtext 90<\/strong><\/h2>\n\n\n\n<p><strong>Smith Corona<\/strong> sold the <strong>Graphtext 90<\/strong>. No computer control. Same pens and also ran on batteries.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-4 is-cropped\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHazvWYAYDEsH.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHazvWYAYDEsH-600x800.jpg\" alt=\"\" data-id=\"2167\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHazvWYAYDEsH.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2167#main\" class=\"wp-image-2167\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHazvWYAYDEsH-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHazvWYAYDEsH-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHazvWYAYDEsH-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHazvWYAYDEsH.jpg 900w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHa4vXwAAQg3P.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHa4vXwAAQg3P-600x800.jpg\" alt=\"\" data-id=\"2165\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHa4vXwAAQg3P.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2165#main\" class=\"wp-image-2165\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHa4vXwAAQg3P-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHa4vXwAAQg3P-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHa4vXwAAQg3P-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHa4vXwAAQg3P.jpg 900w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHa42XwAAw0pz.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHa42XwAAw0pz-600x800.jpg\" alt=\"\" data-id=\"2166\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHa42XwAAw0pz.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2166#main\" class=\"wp-image-2166\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHa42XwAAw0pz-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHa42XwAAw0pz-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHa42XwAAw0pz-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHa42XwAAw0pz.jpg 900w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHa_EXIAMjsRW.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHa_EXIAMjsRW-600x800.jpg\" alt=\"\" data-id=\"2164\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHa_EXIAMjsRW.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2164#main\" class=\"wp-image-2164\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHa_EXIAMjsRW-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHa_EXIAMjsRW-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHa_EXIAMjsRW-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114663475302406-FJGHa_EXIAMjsRW.jpg 900w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<h2><strong>Brother<\/strong> <strong>Type-a-Graph BP-30<\/strong><\/h2>\n\n\n\n<p>Not to be left out, <strong>Brother<\/strong> offered the <strong>Type-a-Graph BP-30<\/strong>. Pics from eBay\u2014 there\u2019s usually a lot of these for sale.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-3 is-cropped\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114673348648961-FJGHcCvXIAwPn-e.jpg\"><img loading=\"lazy\" width=\"840\" height=\"638\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114673348648961-FJGHcCvXIAwPn-e-840x638.jpg\" alt=\"\" data-id=\"2169\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114673348648961-FJGHcCvXIAwPn-e.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2169#main\" class=\"wp-image-2169\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114673348648961-FJGHcCvXIAwPn-e-840x638.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114673348648961-FJGHcCvXIAwPn-e-300x228.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114673348648961-FJGHcCvXIAwPn-e-768x584.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114673348648961-FJGHcCvXIAwPn-e.jpg 1200w\" sizes=\"(max-width: 840px) 100vw, 840px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114673348648961-FJGHcC4XsAEJCp8.jpg\"><img loading=\"lazy\" width=\"603\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114673348648961-FJGHcC4XsAEJCp8-603x800.jpg\" alt=\"\" data-id=\"2168\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114673348648961-FJGHcC4XsAEJCp8.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2168#main\" class=\"wp-image-2168\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114673348648961-FJGHcC4XsAEJCp8-603x800.jpg 603w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114673348648961-FJGHcC4XsAEJCp8-226x300.jpg 226w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114673348648961-FJGHcC4XsAEJCp8-768x1019.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114673348648961-FJGHcC4XsAEJCp8.jpg 904w\" sizes=\"(max-width: 603px) 100vw, 603px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114673348648961-FJGHcDMXIAMsgyQ.jpg\"><img loading=\"lazy\" width=\"607\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114673348648961-FJGHcDMXIAMsgyQ-607x800.jpg\" alt=\"\" data-id=\"2170\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114673348648961-FJGHcDMXIAMsgyQ.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2170#main\" class=\"wp-image-2170\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114673348648961-FJGHcDMXIAMsgyQ-607x800.jpg 607w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114673348648961-FJGHcDMXIAMsgyQ-228x300.jpg 228w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114673348648961-FJGHcDMXIAMsgyQ-768x1013.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114673348648961-FJGHcDMXIAMsgyQ.jpg 910w\" sizes=\"(max-width: 607px) 100vw, 607px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<h2>Sears <strong>LXI Type-O-Graph<\/strong><\/h2>\n\n\n\n<p>Even <strong>Sears<\/strong> got into the game with the <strong>LXI Type-O-Graph<\/strong> (by likely rebranding the Brother Type-a-Graph, they look the same). Mine has a flaw in the print head mechanism.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-3 is-cropped\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114684845268992-FJGHcd8XwAM3tlc.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114684845268992-FJGHcd8XwAM3tlc-600x800.jpg\" alt=\"\" data-id=\"2171\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114684845268992-FJGHcd8XwAM3tlc.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2171#main\" class=\"wp-image-2171\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114684845268992-FJGHcd8XwAM3tlc-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114684845268992-FJGHcd8XwAM3tlc-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114684845268992-FJGHcd8XwAM3tlc-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114684845268992-FJGHcd8XwAM3tlc.jpg 900w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114684845268992-FJGHcj1WUAUmAhM.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114684845268992-FJGHcj1WUAUmAhM-600x800.jpg\" alt=\"\" data-id=\"2173\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114684845268992-FJGHcj1WUAUmAhM.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2173#main\" class=\"wp-image-2173\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114684845268992-FJGHcj1WUAUmAhM-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114684845268992-FJGHcj1WUAUmAhM-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114684845268992-FJGHcj1WUAUmAhM-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114684845268992-FJGHcj1WUAUmAhM.jpg 900w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114684845268992-FJGHcj0XMAkkTfM.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114684845268992-FJGHcj0XMAkkTfM-600x800.jpg\" alt=\"\" data-id=\"2172\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114684845268992-FJGHcj0XMAkkTfM.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2172#main\" class=\"wp-image-2172\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114684845268992-FJGHcj0XMAkkTfM-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114684845268992-FJGHcj0XMAkkTfM-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114684845268992-FJGHcj0XMAkkTfM-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114684845268992-FJGHcj0XMAkkTfM.jpg 900w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<h2><strong>Sharp EL-7050<\/strong> Calculator<\/h2>\n\n\n\n<p>Adding to the oddware that included pen plotters in them, there was even a calculator with a tiny plotter built-in. This is the <strong>Sharp EL-7050<\/strong> calculator with a built in plotter printer. It could act as a usual printing calculator but it could also draw graphs and pie charts of data sets.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-2 is-cropped\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1344419943866101763-EqhWz-IW4AA7T3p.jpg\"><img loading=\"lazy\" width=\"840\" height=\"630\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1344419943866101763-EqhWz-IW4AA7T3p-840x630.jpg\" alt=\"\" data-id=\"2174\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1344419943866101763-EqhWz-IW4AA7T3p.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2174#main\" class=\"wp-image-2174\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1344419943866101763-EqhWz-IW4AA7T3p-840x630.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1344419943866101763-EqhWz-IW4AA7T3p-300x225.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1344419943866101763-EqhWz-IW4AA7T3p-768x576.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1344419943866101763-EqhWz-IW4AA7T3p.jpg 1200w\" sizes=\"(max-width: 840px) 100vw, 840px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1344419943866101763-EqhWz-KXEAISZb8.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1344419943866101763-EqhWz-KXEAISZb8-600x800.jpg\" alt=\"\" data-id=\"2175\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1344419943866101763-EqhWz-KXEAISZb8.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2175#main\" class=\"wp-image-2175\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1344419943866101763-EqhWz-KXEAISZb8-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1344419943866101763-EqhWz-KXEAISZb8-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1344419943866101763-EqhWz-KXEAISZb8-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1344419943866101763-EqhWz-KXEAISZb8.jpg 900w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<p>Here\u2019s a video of the Sharp EL-7050 calculator printing the powers of 2.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Sharp EL-7050 calculator plotter printing the powers of 2.\" width=\"646\" height=\"363\" src=\"https:\/\/www.youtube.com\/embed\/BRJmXw44hD4?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p>And here\u2019s the Sharp EL-7050 calculator plotting the graph.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Sharp EL-7050 calculator plotting the graph of powers of 2.\" width=\"646\" height=\"363\" src=\"https:\/\/www.youtube.com\/embed\/Z5BesJKzZH8?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2>Music Keyboard<\/h2>\n\n\n\n<p>Yamaha added a pen plotter to one of their music keyboards, the Yamaha MP-1. The idea was you&#8217;d compose music on the keyboard and it would plot the notes on paper as you played. The reality is the plotter was so much slower than you could play, it would take forever to catch up. It also wasn&#8217;t great at quantization so the notes were likely not what you&#8217;d expect.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-2 is-cropped\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"840\" height=\"500\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2025\/12\/IMG_3611-840x500.jpg\" alt=\"\" data-id=\"3100\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2025\/12\/IMG_3611-scaled.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=3100#main\" class=\"wp-image-3100\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2025\/12\/IMG_3611-840x500.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2025\/12\/IMG_3611-300x179.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2025\/12\/IMG_3611-768x457.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2025\/12\/IMG_3611-1536x915.jpg 1536w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2025\/12\/IMG_3611-2048x1220.jpg 2048w\" sizes=\"(max-width: 840px) 100vw, 840px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"840\" height=\"630\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2025\/12\/IMG_3602-840x630.jpg\" alt=\"\" data-id=\"3099\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2025\/12\/IMG_3602-scaled.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=3099#main\" class=\"wp-image-3099\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2025\/12\/IMG_3602-840x630.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2025\/12\/IMG_3602-300x225.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2025\/12\/IMG_3602-768x576.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2025\/12\/IMG_3602-1536x1152.jpg 1536w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2025\/12\/IMG_3602-2048x1536.jpg 2048w\" sizes=\"(max-width: 840px) 100vw, 840px\" \/><\/figure><\/li><\/ul><\/figure>\n\n\n\n<h2>Built In Plotters<\/h2>\n\n\n\n<p>Many small computers in the 1980s also had plotters available like the <strong>Commodore 1520<\/strong> and the <strong>Atari 1020<\/strong>. They used 4\u201d wide paper and the same pens.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-2 is-cropped\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114696597626880-FJGHdT5WQAcAnMj.jpg\"><img loading=\"lazy\" width=\"840\" height=\"630\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114696597626880-FJGHdT5WQAcAnMj-840x630.jpg\" alt=\"\" data-id=\"2176\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114696597626880-FJGHdT5WQAcAnMj.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2176#main\" class=\"wp-image-2176\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114696597626880-FJGHdT5WQAcAnMj-840x630.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114696597626880-FJGHdT5WQAcAnMj-300x225.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114696597626880-FJGHdT5WQAcAnMj-768x576.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114696597626880-FJGHdT5WQAcAnMj.jpg 1200w\" sizes=\"(max-width: 840px) 100vw, 840px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114696597626880-FJGHdWkWQAA_s1L.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114696597626880-FJGHdWkWQAA_s1L-600x800.jpg\" alt=\"\" data-id=\"2177\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114696597626880-FJGHdWkWQAA_s1L.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2177#main\" class=\"wp-image-2177\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114696597626880-FJGHdWkWQAA_s1L-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114696597626880-FJGHdWkWQAA_s1L-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114696597626880-FJGHdWkWQAA_s1L-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114696597626880-FJGHdWkWQAA_s1L.jpg 900w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<p>Some \u201cslabtops\u201d had built in pen plotters like the <strong>Casio PB-700<\/strong>, <strong>Radio Shack Tandy PC-2<\/strong>, and <strong>Sharp PC-2500<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-3 is-cropped\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114710946332677-FJGHd_1WUAMfqUE.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114710946332677-FJGHd_1WUAMfqUE-600x800.jpg\" alt=\"\" data-id=\"2178\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114710946332677-FJGHd_1WUAMfqUE.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2178#main\" class=\"wp-image-2178\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114710946332677-FJGHd_1WUAMfqUE-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114710946332677-FJGHd_1WUAMfqUE-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114710946332677-FJGHd_1WUAMfqUE-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114710946332677-FJGHd_1WUAMfqUE.jpg 900w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114710946332677-FJGHeGUXEAk_mEg.jpg\"><img loading=\"lazy\" width=\"840\" height=\"630\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114710946332677-FJGHeGUXEAk_mEg-840x630.jpg\" alt=\"\" data-id=\"2179\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114710946332677-FJGHeGUXEAk_mEg.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2179#main\" class=\"wp-image-2179\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114710946332677-FJGHeGUXEAk_mEg-840x630.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114710946332677-FJGHeGUXEAk_mEg-300x225.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114710946332677-FJGHeGUXEAk_mEg-768x576.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114710946332677-FJGHeGUXEAk_mEg.jpg 1200w\" sizes=\"(max-width: 840px) 100vw, 840px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114710946332677-FJGHeHaWYAcvyRj.jpg\"><img loading=\"lazy\" width=\"840\" height=\"630\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114710946332677-FJGHeHaWYAcvyRj-840x630.jpg\" alt=\"\" data-id=\"2180\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114710946332677-FJGHeHaWYAcvyRj.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2180#main\" class=\"wp-image-2180\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114710946332677-FJGHeHaWYAcvyRj-840x630.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114710946332677-FJGHeHaWYAcvyRj-300x225.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114710946332677-FJGHeHaWYAcvyRj-768x576.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114710946332677-FJGHeHaWYAcvyRj.jpg 1200w\" sizes=\"(max-width: 840px) 100vw, 840px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<h2>Pens<\/h2>\n\n\n\n<p>All of the typewriter models used the same ball point pens in four colors (black, red, green, blue) and were portable with a built-in handle and could run on batteries. They also likely all used the same plotter mechanisms made by Alps.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-2 is-cropped\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114727882993672-FJGHezwXsAANqfm.jpg\"><img loading=\"lazy\" width=\"840\" height=\"630\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114727882993672-FJGHezwXsAANqfm-840x630.jpg\" alt=\"\" data-id=\"2182\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114727882993672-FJGHezwXsAANqfm.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2182#main\" class=\"wp-image-2182\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114727882993672-FJGHezwXsAANqfm-840x630.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114727882993672-FJGHezwXsAANqfm-300x225.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114727882993672-FJGHezwXsAANqfm-768x576.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114727882993672-FJGHezwXsAANqfm.jpg 1200w\" sizes=\"(max-width: 840px) 100vw, 840px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114727882993672-FJGHe5NWUAkEPiW.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114727882993672-FJGHe5NWUAkEPiW-600x800.jpg\" alt=\"\" data-id=\"2181\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114727882993672-FJGHe5NWUAkEPiW.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2181#main\" class=\"wp-image-2181\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114727882993672-FJGHe5NWUAkEPiW-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114727882993672-FJGHe5NWUAkEPiW-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114727882993672-FJGHe5NWUAkEPiW-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114727882993672-FJGHe5NWUAkEPiW.jpg 900w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<p>The pens are rather scarce now, mostly all that remains are NOS (new old stock) with some exceptions for a couple of German companies that make replacements for medical equipment that fit.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-1 is-cropped\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114734883278850-FJGHfwwXMAIT70Y.jpg\"><img loading=\"lazy\" width=\"640\" height=\"640\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114734883278850-FJGHfwwXMAIT70Y.jpg\" alt=\"\" data-id=\"2183\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114734883278850-FJGHfwwXMAIT70Y.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2183#main\" class=\"wp-image-2183\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114734883278850-FJGHfwwXMAIT70Y.jpg 640w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114734883278850-FJGHfwwXMAIT70Y-300x300.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482114734883278850-FJGHfwwXMAIT70Y-150x150.jpg 150w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<p>These pen typewriters were sold during the mid 1980s. In PC World magazine July 1985, the Panasonic RK-P400C retailed for $350.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-3 is-cropped\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482187344996405258-FJHJiBXXwAEJDIi.jpg\"><img loading=\"lazy\" width=\"522\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482187344996405258-FJHJiBXXwAEJDIi-522x800.jpg\" alt=\"\" data-id=\"2186\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482187344996405258-FJHJiBXXwAEJDIi.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2186#main\" class=\"wp-image-2186\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482187344996405258-FJHJiBXXwAEJDIi-522x800.jpg 522w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482187344996405258-FJHJiBXXwAEJDIi-196x300.jpg 196w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482187344996405258-FJHJiBXXwAEJDIi-768x1177.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482187344996405258-FJHJiBXXwAEJDIi.jpg 783w\" sizes=\"(max-width: 522px) 100vw, 522px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482187344996405258-FJHJiBXXIAUA-QS.jpg\"><img loading=\"lazy\" width=\"613\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482187344996405258-FJHJiBXXIAUA-QS-613x800.jpg\" alt=\"\" data-id=\"2184\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482187344996405258-FJHJiBXXIAUA-QS.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2184#main\" class=\"wp-image-2184\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482187344996405258-FJHJiBXXIAUA-QS-613x800.jpg 613w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482187344996405258-FJHJiBXXIAUA-QS-230x300.jpg 230w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482187344996405258-FJHJiBXXIAUA-QS-768x1003.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482187344996405258-FJHJiBXXIAUA-QS.jpg 919w\" sizes=\"(max-width: 613px) 100vw, 613px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482187344996405258-FJHJiBXXMAQUUOy.jpg\"><img loading=\"lazy\" width=\"603\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482187344996405258-FJHJiBXXMAQUUOy-603x800.jpg\" alt=\"\" data-id=\"2185\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482187344996405258-FJHJiBXXMAQUUOy.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2185#main\" class=\"wp-image-2185\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482187344996405258-FJHJiBXXMAQUUOy-603x800.jpg 603w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482187344996405258-FJHJiBXXMAQUUOy-226x300.jpg 226w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482187344996405258-FJHJiBXXMAQUUOy-768x1019.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1482187344996405258-FJHJiBXXMAQUUOy.jpg 904w\" sizes=\"(max-width: 603px) 100vw, 603px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Did you know there were typewriters that used ball point pens to draw not just text but also graphics? I\u2019ve collected several of these over the years. Read on to discover a world that you didn&#8217;t know existed.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[66,15],"tags":[74,75,52,44,76,77,51,50],"_links":{"self":[{"href":"https:\/\/biosrhythm.com\/index.php?rest_route=\/wp\/v2\/posts\/2143"}],"collection":[{"href":"https:\/\/biosrhythm.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/biosrhythm.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/biosrhythm.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/biosrhythm.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2143"}],"version-history":[{"count":6,"href":"https:\/\/biosrhythm.com\/index.php?rest_route=\/wp\/v2\/posts\/2143\/revisions"}],"predecessor-version":[{"id":3101,"href":"https:\/\/biosrhythm.com\/index.php?rest_route=\/wp\/v2\/posts\/2143\/revisions\/3101"}],"wp:attachment":[{"href":"https:\/\/biosrhythm.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2143"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/biosrhythm.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2143"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/biosrhythm.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2143"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}