{"id":25701551,"url":"https://github.com/mengstr/aytabtu","last_synced_at":"2026-02-23T16:10:45.082Z","repository":{"id":34527604,"uuid":"38470269","full_name":"mengstr/aytabtu","owner":"mengstr","description":"[All Your Transistors Are Belong to Us] - A computer built from transistors","archived":false,"fork":false,"pushed_at":"2015-08-27T04:01:43.000Z","size":23313,"stargazers_count":9,"open_issues_count":0,"forks_count":2,"subscribers_count":2,"default_branch":"master","last_synced_at":"2023-03-11T04:29:56.373Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":null,"language":"Eagle","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/mengstr.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null}},"created_at":"2015-07-03T03:37:36.000Z","updated_at":"2022-05-02T16:43:51.000Z","dependencies_parsed_at":"2022-09-14T14:22:11.435Z","dependency_job_id":null,"html_url":"https://github.com/mengstr/aytabtu","commit_stats":null,"previous_names":[],"tags_count":null,"template":null,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/mengstr%2Faytabtu","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/mengstr%2Faytabtu/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/mengstr%2Faytabtu/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/mengstr%2Faytabtu/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/mengstr","download_url":"https://codeload.github.com/mengstr/aytabtu/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":240599172,"owners_count":19826959,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2025-02-25T04:17:41.577Z","updated_at":"2025-10-29T02:15:16.971Z","avatar_url":"https://github.com/mengstr.png","language":"Eagle","funding_links":[],"categories":[],"sub_categories":[],"readme":"# AYTABTU\n\n\u003cimg src=\"https://github.com/SmallRoomLabs/aytabtu/blob/master/Images/FrontImage1.jpg\" alt=\"Artful picture of a protoboard\" align=\"right\" width=\"240px\" \u003e\n**[All Your Transistors Are Belong to Us] - A computer built from discrete parts**\n\nThis is my attempt of building a complete computer using only discrete parts like transistors, diodes, capactitors and resistors.\n\nJust to get warmed up a bit I've started designing an UART capable of transmiting and receiving serial data in 300 bps.\n\nI plan to make proper PCBs for the boards that I require a lot of, like memory, registers and ALU-slices, but many of the more or less one-off boards will be made on standard donut-perfboard with thru-hole parts.\n\n## Credits\nI've used, collected, gleaned, stolen, borrowed and been inspired by the information on the following web sites:\n\nDonut pcb layout creator - [code.google.com/p/diy-layout-creator/](https://code.google.com/p/diy-layout-creator/)  \nRing counter - [vk2zay.net/article/201](http://www.vk2zay.net/article/201)  \nAsymetric multivibrator - [4qdtec.com/mvibs.html](http://www.4qdtec.com/mvibs.html)  \nSingle cycle CPU - [eecg.toronto.edu/~moshovos/ECE243-07/...](http://www.eecg.toronto.edu/~moshovos/ECE243-07/l19-implemenation-single-cycle.html)  \nBinary incrementer - [letslearncomputing.blogspot.com/2013/....](http://letslearncomputing.blogspot.com/2013/03/digital-logic-4-bit-binary-incrementer.html)  \n12/8bit cpu - [usti8bit.blogspot.com](usti8bit.blogspot.com/2015_03_01_archive.html)  \n8bit ttl cpu - [digitarworld.uw.hu/ttlcpu.html](http://digitarworld.uw.hu/ttlcpu.html)  \nASAP3 Computer - [pong74ls.blogspot.com/...](http://pong74ls.blogspot.com/2013/11/asap-3-almost-simple-as-possible.html)  \nTiny Tim - [northdownfarm.co.uk/rory/tim/tinytim.htm](http://www.northdownfarm.co.uk/rory/tim/tinytim.htm) \n\n\n## Links to my own resources\nLink to Google Sheets for a [TX faker generator](https://docs.google.com/spreadsheets/d/1nLxUwCidM7_CYKXSP2XA_T4spadFk9zQSKAtxVXUBSM/edit?usp=sharing).\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmengstr%2Faytabtu","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fmengstr%2Faytabtu","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmengstr%2Faytabtu/lists"}