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A comment on Don Lancaster's Guru's Lair Home Page. Parent comment

Re:Don Lancaster's Guru's Lair Home Page by djmips on Wednesday March 03, 2021 @02:52AM (#26325803)
And this technique was also used for video output on the Sinclair ZX-80 if I am not mistaken.
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Re:Don Lancaster's Guru's Lair Home Page by jecel on Wednesday March 03, 2021 @03:02PM (#26333630)
He later had books mentioned in other comments: "The Cheap Video Cookbook" and "Son of Cheap Video". In these he added just a few TTLs to a Kim-1 computer and generated video using mostly software.

The Sinclair ZX-80 was much closer to this than to the TV Typewriter (which was 100% hardware). Some other computers that used this technique back in the day:

https://en.wikipedia.org/wiki/Aamber_Pegasus

https://en.wikipedia.org/wiki/Galaksija_(computer)

And here is a recent project:

https://en.wikipedia.org/wiki/Gigatron_TTL

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