{"id":2191,"date":"2022-12-08T17:20:20","date_gmt":"2022-12-08T22:20:20","guid":{"rendered":"https:\/\/biosrhythm.com\/?p=2191"},"modified":"2022-12-08T17:21:44","modified_gmt":"2022-12-08T22:21:44","slug":"radio-shack-trs-80-pc-2-pocket-computer-refurbishment","status":"publish","type":"post","link":"https:\/\/biosrhythm.com\/?p=2191","title":{"rendered":"Radio Shack TRS-80 PC-2 Pocket Computer and Plotter Refurbishment"},"content":{"rendered":"\n<p>(This was originally a Twitter thread from November 15, 2019.)<\/p>\n\n\n\n<p><strong>November 15, 2019<\/strong><\/p>\n\n\n\n<p>Say 10 PRINT \u201cHello, World!\u201d to my new Radio Shack TRS-80 PC-2 pocket computer with printer cassette docking interface. Has BASIC and \u201c2640-character program and data memory\u201d\u2014 so a little over 2.5K of RAM. Many thanks to <a href=\"https:\/\/twitter.com\/FloppyDays\">@FloppyDays<\/a>, it\u2019s all in tip-top shape!<\/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\/1195412563204411394-EJb1YyHW4AsR5rK.jpg\"><img loading=\"lazy\" width=\"840\" height=\"630\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195412563204411394-EJb1YyHW4AsR5rK-840x630.jpg\" alt=\"\" data-id=\"2192\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195412563204411394-EJb1YyHW4AsR5rK.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2192#main\" class=\"wp-image-2192\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195412563204411394-EJb1YyHW4AsR5rK-840x630.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195412563204411394-EJb1YyHW4AsR5rK-300x225.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195412563204411394-EJb1YyHW4AsR5rK-768x576.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195412563204411394-EJb1YyHW4AsR5rK.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\/1195412563204411394-EJb1YyKXUAI0vsf.jpg\"><img loading=\"lazy\" width=\"840\" height=\"630\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195412563204411394-EJb1YyKXUAI0vsf-840x630.jpg\" alt=\"\" data-id=\"2193\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195412563204411394-EJb1YyKXUAI0vsf.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2193#main\" class=\"wp-image-2193\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195412563204411394-EJb1YyKXUAI0vsf-840x630.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195412563204411394-EJb1YyKXUAI0vsf-300x225.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195412563204411394-EJb1YyKXUAI0vsf-768x576.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195412563204411394-EJb1YyKXUAI0vsf.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\/1195412563204411394-EJb1YyUXkAMhvYc.jpg\"><img loading=\"lazy\" width=\"840\" height=\"630\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195412563204411394-EJb1YyUXkAMhvYc-840x630.jpg\" alt=\"\" data-id=\"2194\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195412563204411394-EJb1YyUXkAMhvYc.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2194#main\" class=\"wp-image-2194\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195412563204411394-EJb1YyUXkAMhvYc-840x630.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195412563204411394-EJb1YyUXkAMhvYc-300x225.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195412563204411394-EJb1YyUXkAMhvYc-768x576.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195412563204411394-EJb1YyUXkAMhvYc.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\/1195412563204411394-EJb1YyUXkAQZ0PZ.jpg\"><img loading=\"lazy\" width=\"840\" height=\"630\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195412563204411394-EJb1YyUXkAQZ0PZ-840x630.jpg\" alt=\"\" data-id=\"2195\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195412563204411394-EJb1YyUXkAQZ0PZ.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2195#main\" class=\"wp-image-2195\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195412563204411394-EJb1YyUXkAQZ0PZ-840x630.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195412563204411394-EJb1YyUXkAQZ0PZ-300x225.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195412563204411394-EJb1YyUXkAQZ0PZ-768x576.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195412563204411394-EJb1YyUXkAQZ0PZ.jpg 1200w\" sizes=\"(max-width: 840px) 100vw, 840px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<!--more-->\n\n\n\n<p>One surprise is the printer is actually a plotter! It\u2019s by Alps (DPG-1301), the same as the one in the Atari 1020, Commodore 1520, etc. but half the size. Instead of 4\u201d wide paper rolls, it uses 2.25\u201d paper. Smallest plotter ever?<\/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\/1195423059991289857-EJb-7yGWwAAAu0j.jpg\"><img loading=\"lazy\" width=\"800\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195423059991289857-EJb-7yGWwAAAu0j-800x800.jpg\" alt=\"\" data-id=\"2197\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195423059991289857-EJb-7yGWwAAAu0j.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2197#main\" class=\"wp-image-2197\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195423059991289857-EJb-7yGWwAAAu0j-800x800.jpg 800w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195423059991289857-EJb-7yGWwAAAu0j-300x300.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195423059991289857-EJb-7yGWwAAAu0j-150x150.jpg 150w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195423059991289857-EJb-7yGWwAAAu0j-768x768.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195423059991289857-EJb-7yGWwAAAu0j.jpg 1200w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195423059991289857-EJb-7yIXkAIFHIm.jpg\"><img loading=\"lazy\" width=\"840\" height=\"630\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195423059991289857-EJb-7yIXkAIFHIm-840x630.jpg\" alt=\"\" data-id=\"2198\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195423059991289857-EJb-7yIXkAIFHIm.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2198#main\" class=\"wp-image-2198\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195423059991289857-EJb-7yIXkAIFHIm-840x630.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195423059991289857-EJb-7yIXkAIFHIm-300x225.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195423059991289857-EJb-7yIXkAIFHIm-768x576.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195423059991289857-EJb-7yIXkAIFHIm.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\/1195423059991289857-EJb-7yFXkAMoH5P.jpg\"><img loading=\"lazy\" width=\"840\" height=\"630\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195423059991289857-EJb-7yFXkAMoH5P-840x630.jpg\" alt=\"\" data-id=\"2196\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195423059991289857-EJb-7yFXkAMoH5P.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2196#main\" class=\"wp-image-2196\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195423059991289857-EJb-7yFXkAMoH5P-840x630.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195423059991289857-EJb-7yFXkAMoH5P-300x225.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195423059991289857-EJb-7yFXkAMoH5P-768x576.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195423059991289857-EJb-7yFXkAMoH5P.jpg 1200w\" sizes=\"(max-width: 840px) 100vw, 840px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<p>The X\/Y stepper gears on the PC-2 also split over time but my replacements fit this tiny plotter too. <a rel=\"noreferrer noopener\" href=\"https:\/\/www.shapeways.com\/product\/CMBQ6D2Z4\/alps-x-y-plotter-gear-qty-3-commodore-atari\" target=\"_blank\">Get a set of 3 printed at Shapeways.<\/a> Fits Commodore 1520, Atari 1020, and many more Alps plotters.<\/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\/1195440142519017473-EJcOeKNXYAAgJB6.jpg\"><img loading=\"lazy\" width=\"800\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195440142519017473-EJcOeKNXYAAgJB6-800x800.jpg\" alt=\"\" data-id=\"2199\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195440142519017473-EJcOeKNXYAAgJB6.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2199#main\" class=\"wp-image-2199\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195440142519017473-EJcOeKNXYAAgJB6-800x800.jpg 800w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195440142519017473-EJcOeKNXYAAgJB6-300x300.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195440142519017473-EJcOeKNXYAAgJB6-150x150.jpg 150w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195440142519017473-EJcOeKNXYAAgJB6-768x768.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195440142519017473-EJcOeKNXYAAgJB6.jpg 1200w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<p>There\u2019s also a NiCd battery pack lurking inside the cassette interface. Over time these will leak and damage the board. I got lucky and see no signs of damage. Out it goes.<\/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\/1195442154300231680-EJcQTOBXYAEFoyz.jpg\"><img loading=\"lazy\" width=\"840\" height=\"630\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195442154300231680-EJcQTOBXYAEFoyz-840x630.jpg\" alt=\"\" data-id=\"2200\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195442154300231680-EJcQTOBXYAEFoyz.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2200#main\" class=\"wp-image-2200\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195442154300231680-EJcQTOBXYAEFoyz-840x630.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195442154300231680-EJcQTOBXYAEFoyz-300x225.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195442154300231680-EJcQTOBXYAEFoyz-768x576.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195442154300231680-EJcQTOBXYAEFoyz.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\/1195442154300231680-EJcQTOCXYAAxC6K.jpg\"><img loading=\"lazy\" width=\"840\" height=\"630\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195442154300231680-EJcQTOCXYAAxC6K-840x630.jpg\" alt=\"\" data-id=\"2201\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195442154300231680-EJcQTOCXYAAxC6K.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2201#main\" class=\"wp-image-2201\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195442154300231680-EJcQTOCXYAAxC6K-840x630.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195442154300231680-EJcQTOCXYAAxC6K-300x225.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195442154300231680-EJcQTOCXYAAxC6K-768x576.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195442154300231680-EJcQTOCXYAAxC6K.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\/1195442154300231680-EJcQTOuXsAEYwqH.jpg\"><img loading=\"lazy\" width=\"840\" height=\"630\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195442154300231680-EJcQTOuXsAEYwqH-840x630.jpg\" alt=\"\" data-id=\"2202\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195442154300231680-EJcQTOuXsAEYwqH.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2202#main\" class=\"wp-image-2202\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195442154300231680-EJcQTOuXsAEYwqH-840x630.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195442154300231680-EJcQTOuXsAEYwqH-300x225.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195442154300231680-EJcQTOuXsAEYwqH-768x576.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195442154300231680-EJcQTOuXsAEYwqH.jpg 1200w\" sizes=\"(max-width: 840px) 100vw, 840px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<p>So, as with any new plotter I get, I want to port Schotter (Georg Nees, 1965) over to it. Here\u2019s my BASIC port for the PC-2 (saved and loaded back from cassette) on 2.25\u201d wide paper. There&#8217;s a great book called<a href=\"https:\/\/archive.org\/details\/gettingstartedon00harv\" data-type=\"URL\" data-id=\"https:\/\/archive.org\/details\/gettingstartedon00harv\" target=\"_blank\" rel=\"noreferrer noopener\"> Getting Started on the PC-2 available from Archive.org.<\/a><\/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\/1195481629311016960-EJc0MFTWkAAV9hj.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195481629311016960-EJc0MFTWkAAV9hj-600x800.jpg\" alt=\"\" data-id=\"2203\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195481629311016960-EJc0MFTWkAAV9hj.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2203#main\" class=\"wp-image-2203\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195481629311016960-EJc0MFTWkAAV9hj-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195481629311016960-EJc0MFTWkAAV9hj-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195481629311016960-EJc0MFTWkAAV9hj-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195481629311016960-EJc0MFTWkAAV9hj.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\/1195481629311016960-EJc0MFUXYAEQ_x9.jpg\"><img loading=\"lazy\" width=\"840\" height=\"630\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195481629311016960-EJc0MFUXYAEQ_x9-840x630.jpg\" alt=\"\" data-id=\"2205\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195481629311016960-EJc0MFUXYAEQ_x9.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2205#main\" class=\"wp-image-2205\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195481629311016960-EJc0MFUXYAEQ_x9-840x630.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195481629311016960-EJc0MFUXYAEQ_x9-300x225.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195481629311016960-EJc0MFUXYAEQ_x9-768x576.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195481629311016960-EJc0MFUXYAEQ_x9.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\/1195481629311016960-EJc0MFTWoAA8UQW.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195481629311016960-EJc0MFTWoAA8UQW-600x800.jpg\" alt=\"\" data-id=\"2204\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195481629311016960-EJc0MFTWoAA8UQW.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2204#main\" class=\"wp-image-2204\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195481629311016960-EJc0MFTWoAA8UQW-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195481629311016960-EJc0MFTWoAA8UQW-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195481629311016960-EJc0MFTWoAA8UQW-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1195481629311016960-EJc0MFTWoAA8UQW.jpg 900w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p><strong>November 16, 2019<\/strong><\/p>\n\n\n\n<p>Here\u2019s a video of the Radio Shack TRS-80 PC-2 (with the cover off) plotting Schotter.<\/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=\"Radio Shack TRS-80 PC-2 (with the cover off) plotting Schotter\" width=\"646\" height=\"363\" src=\"https:\/\/www.youtube.com\/embed\/nMnjqwEEzFs?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p>If you have a Radio Shack PC-2 with the plotter, you can try loading \u201cSchotter\u201d from this \u201ccassette\u201d using your mobile device as the source. Let me know if you get it to load! <strong>[warning, loud audio]<\/strong><\/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=\"Schotter, a BASIC program for the Radio Shack TRS-80 PC-2 Computer and Pen Plotter (warning- loud!)\" width=\"646\" height=\"363\" src=\"https:\/\/www.youtube.com\/embed\/vK_xTsWDvMU?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n<\/div><figcaption>[Warning: Loud audio!] Play this sound into your PC-2 to load Schotter.<\/figcaption><\/figure>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p><strong>November 17, 2019<\/strong><\/p>\n\n\n\n<p>Some more Radio Shack PC-2 plotter prints with BASIC source code. Added some color and some new paper (\u201cadding machine tape\u201d). Each is 2.25\u201d wide.<\/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\/1196122296425074695-EJl63y7W4AEEygg.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196122296425074695-EJl63y7W4AEEygg-600x800.jpg\" alt=\"\" data-id=\"2207\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196122296425074695-EJl63y7W4AEEygg.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2207#main\" class=\"wp-image-2207\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196122296425074695-EJl63y7W4AEEygg-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196122296425074695-EJl63y7W4AEEygg-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196122296425074695-EJl63y7W4AEEygg-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196122296425074695-EJl63y7W4AEEygg.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\/1196122296425074695-EJl63y9WsAAcX_M.jpg\"><img loading=\"lazy\" width=\"840\" height=\"630\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196122296425074695-EJl63y9WsAAcX_M-840x630.jpg\" alt=\"\" data-id=\"2209\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196122296425074695-EJl63y9WsAAcX_M.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2209#main\" class=\"wp-image-2209\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196122296425074695-EJl63y9WsAAcX_M-840x630.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196122296425074695-EJl63y9WsAAcX_M-300x225.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196122296425074695-EJl63y9WsAAcX_M-768x576.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196122296425074695-EJl63y9WsAAcX_M.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\/1196122296425074695-EJl63y7W4AAoqrU.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196122296425074695-EJl63y7W4AAoqrU-600x800.jpg\" alt=\"\" data-id=\"2206\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196122296425074695-EJl63y7W4AAoqrU.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2206#main\" class=\"wp-image-2206\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196122296425074695-EJl63y7W4AAoqrU-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196122296425074695-EJl63y7W4AAoqrU-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196122296425074695-EJl63y7W4AAoqrU-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196122296425074695-EJl63y7W4AAoqrU.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\/1196122296425074695-EJl63y8WwAIYtn8.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196122296425074695-EJl63y8WwAIYtn8-600x800.jpg\" alt=\"\" data-id=\"2208\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196122296425074695-EJl63y8WwAIYtn8.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2208#main\" class=\"wp-image-2208\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196122296425074695-EJl63y8WwAIYtn8-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196122296425074695-EJl63y8WwAIYtn8-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196122296425074695-EJl63y8WwAIYtn8-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196122296425074695-EJl63y8WwAIYtn8.jpg 900w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p><strong>November 18, 2019<\/strong><\/p>\n\n\n\n<p>Yet more Radio Shack PC-2 plotter prints. Having fun revisiting these designs in BASIC at 2.25\u201d at a time. And the most permanent output\u2014 a hard copy to paper.<\/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\/1196598475712016389-EJsr96qW4AY0B22.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196598475712016389-EJsr96qW4AY0B22-600x800.jpg\" alt=\"\" data-id=\"2211\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196598475712016389-EJsr96qW4AY0B22.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2211#main\" class=\"wp-image-2211\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196598475712016389-EJsr96qW4AY0B22-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196598475712016389-EJsr96qW4AY0B22-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196598475712016389-EJsr96qW4AY0B22-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196598475712016389-EJsr96qW4AY0B22.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\/1196598475712016389-EJsr963WkAEtF0z.jpg\"><img loading=\"lazy\" width=\"840\" height=\"630\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196598475712016389-EJsr963WkAEtF0z-840x630.jpg\" alt=\"\" data-id=\"2213\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196598475712016389-EJsr963WkAEtF0z.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2213#main\" class=\"wp-image-2213\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196598475712016389-EJsr963WkAEtF0z-840x630.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196598475712016389-EJsr963WkAEtF0z-300x225.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196598475712016389-EJsr963WkAEtF0z-768x576.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196598475712016389-EJsr963WkAEtF0z.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\/1196598475712016389-EJsr96FXYAAeORU.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196598475712016389-EJsr96FXYAAeORU-600x800.jpg\" alt=\"\" data-id=\"2210\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196598475712016389-EJsr96FXYAAeORU.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2210#main\" class=\"wp-image-2210\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196598475712016389-EJsr96FXYAAeORU-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196598475712016389-EJsr96FXYAAeORU-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196598475712016389-EJsr96FXYAAeORU-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196598475712016389-EJsr96FXYAAeORU.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\/1196598475712016389-EJsr957WwAA5Xgx.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196598475712016389-EJsr957WwAA5Xgx-600x800.jpg\" alt=\"\" data-id=\"2212\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196598475712016389-EJsr957WwAA5Xgx.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2212#main\" class=\"wp-image-2212\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196598475712016389-EJsr957WwAA5Xgx-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196598475712016389-EJsr957WwAA5Xgx-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196598475712016389-EJsr957WwAA5Xgx-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1196598475712016389-EJsr957WwAA5Xgx.jpg 900w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p><strong>November 23, 2019<\/strong><\/p>\n\n\n\n<p>Truchet tile variations on the Radio Shack PC-2 pocket computer plotter with BASIC source.<\/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\/1198307028269256704-EKE94w0WoAAGuu0.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198307028269256704-EKE94w0WoAAGuu0-600x800.jpg\" alt=\"\" data-id=\"2214\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198307028269256704-EKE94w0WoAAGuu0.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2214#main\" class=\"wp-image-2214\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198307028269256704-EKE94w0WoAAGuu0-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198307028269256704-EKE94w0WoAAGuu0-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198307028269256704-EKE94w0WoAAGuu0-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198307028269256704-EKE94w0WoAAGuu0.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\/1198307028269256704-EKE94wtWsAEPSjZ.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198307028269256704-EKE94wtWsAEPSjZ-600x800.jpg\" alt=\"\" data-id=\"2215\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198307028269256704-EKE94wtWsAEPSjZ.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2215#main\" class=\"wp-image-2215\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198307028269256704-EKE94wtWsAEPSjZ-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198307028269256704-EKE94wtWsAEPSjZ-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198307028269256704-EKE94wtWsAEPSjZ-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198307028269256704-EKE94wtWsAEPSjZ.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\/1198307028269256704-EKE94wuXYAAoxdl.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198307028269256704-EKE94wuXYAAoxdl-600x800.jpg\" alt=\"\" data-id=\"2216\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198307028269256704-EKE94wuXYAAoxdl.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2216#main\" class=\"wp-image-2216\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198307028269256704-EKE94wuXYAAoxdl-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198307028269256704-EKE94wuXYAAoxdl-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198307028269256704-EKE94wuXYAAoxdl-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198307028269256704-EKE94wuXYAAoxdl.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\/1198307028269256704-EKE94wvX0AEklPH.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198307028269256704-EKE94wvX0AEklPH-600x800.jpg\" alt=\"\" data-id=\"2217\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198307028269256704-EKE94wvX0AEklPH.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2217#main\" class=\"wp-image-2217\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198307028269256704-EKE94wvX0AEklPH-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198307028269256704-EKE94wvX0AEklPH-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198307028269256704-EKE94wvX0AEklPH-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198307028269256704-EKE94wvX0AEklPH.jpg 900w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p><strong>November 24, 2019<\/strong><\/p>\n\n\n\n<p>Using \u201cMath Plotter\u201d on the Radio Shack PC-2 to plot some 3D graphs on 2.25\u201d wide paper. <a rel=\"noreferrer noopener\" href=\"http:\/\/pc1500.com\/pc2mathplotter.html\" data-type=\"URL\" data-id=\"http:\/\/pc1500.com\/pc2mathplotter.html\" target=\"_blank\">Download it here from pc1500.com.<\/a><\/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\/1198793850824855552-EKL4prmXYAA0_H-.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198793850824855552-EKL4prmXYAA0_H--600x800.jpg\" alt=\"\" data-id=\"2219\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198793850824855552-EKL4prmXYAA0_H-.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2219#main\" class=\"wp-image-2219\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198793850824855552-EKL4prmXYAA0_H--600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198793850824855552-EKL4prmXYAA0_H--225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198793850824855552-EKL4prmXYAA0_H--768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198793850824855552-EKL4prmXYAA0_H-.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\/1198793850824855552-EKL4pr0WkAEMUXW.jpg\"><img loading=\"lazy\" width=\"840\" height=\"630\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198793850824855552-EKL4pr0WkAEMUXW-840x630.jpg\" alt=\"\" data-id=\"2218\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198793850824855552-EKL4pr0WkAEMUXW.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2218#main\" class=\"wp-image-2218\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198793850824855552-EKL4pr0WkAEMUXW-840x630.jpg 840w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198793850824855552-EKL4pr0WkAEMUXW-300x225.jpg 300w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198793850824855552-EKL4pr0WkAEMUXW-768x576.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198793850824855552-EKL4pr0WkAEMUXW.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\/1198793850824855552-EKL4psIXkAAI_TZ.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198793850824855552-EKL4psIXkAAI_TZ-600x800.jpg\" alt=\"\" data-id=\"2221\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198793850824855552-EKL4psIXkAAI_TZ.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2221#main\" class=\"wp-image-2221\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198793850824855552-EKL4psIXkAAI_TZ-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198793850824855552-EKL4psIXkAAI_TZ-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198793850824855552-EKL4psIXkAAI_TZ-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198793850824855552-EKL4psIXkAAI_TZ.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\/1198793850824855552-EKL4psHXsAAyKxH.jpg\"><img loading=\"lazy\" width=\"600\" height=\"800\" src=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198793850824855552-EKL4psHXsAAyKxH-600x800.jpg\" alt=\"\" data-id=\"2220\" data-full-url=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198793850824855552-EKL4psHXsAAyKxH.jpg\" data-link=\"https:\/\/biosrhythm.com\/?attachment_id=2220#main\" class=\"wp-image-2220\" srcset=\"https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198793850824855552-EKL4psHXsAAyKxH-600x800.jpg 600w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198793850824855552-EKL4psHXsAAyKxH-225x300.jpg 225w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198793850824855552-EKL4psHXsAAyKxH-768x1024.jpg 768w, https:\/\/biosrhythm.com\/wp-content\/uploads\/2022\/12\/1198793850824855552-EKL4psHXsAAyKxH.jpg 900w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<p>Do you have a TRS-80 PC-2 computer with the plotter and made some artwork with it? Let me know in the comments.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>(This was originally a Twitter thread from November 15, 2019.) November 15, 2019 Say 10 PRINT \u201cHello, World!\u201d to my new Radio Shack TRS-80 PC-2 pocket computer with printer cassette docking interface. Has BASIC and \u201c2640-character program and data memory\u201d\u2014 so a little over 2.5K of RAM. Many thanks to @FloppyDays, it\u2019s all in tip-top [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[78,66,15],"tags":[83,82,79,52,44,80,81,51,50,65],"_links":{"self":[{"href":"https:\/\/biosrhythm.com\/index.php?rest_route=\/wp\/v2\/posts\/2191"}],"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=2191"}],"version-history":[{"count":2,"href":"https:\/\/biosrhythm.com\/index.php?rest_route=\/wp\/v2\/posts\/2191\/revisions"}],"predecessor-version":[{"id":2223,"href":"https:\/\/biosrhythm.com\/index.php?rest_route=\/wp\/v2\/posts\/2191\/revisions\/2223"}],"wp:attachment":[{"href":"https:\/\/biosrhythm.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2191"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/biosrhythm.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2191"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/biosrhythm.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2191"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}