[chbot] 1 bit computing

[Charles Manning]

In the 1980s I worked on a radar system that used the EPROM look-up
mechanism to implement a vector graphics processor that could augment a
normal vector graphics display with text, lines, curves etc. It used ECL
logic - that's how old it was!

In the next version, a double Eurocard of logic was replaced with one CPLD.

The best thing about the 14500... It had an 8 page data sheet.




On Mon, Apr 21, 2014 at 11:17 AM, Mark Beckett <m.beckett at amuri.net> wrote:

> Funnily enough, I did something very similar for a Lighting controller 15
> years ago.
> The EEPROM was programmed for the appropriate outputs at each address and
> it stepped through the addresses producing 8 outputs.
>
> The higher order bits allowed for a variation of the patterns.
>
> There's one controlling the 33 end lights (fluorescents) at the centennial
> pool, and a few others at Jackpot machines around the country.
>
>
> Brings back memories
>
> Mark
>
>
>
>
> Mark Atherton wrote:
>
>> http://laughtonelectronics.com/Arcana/One-bit%20computer/
>> One-bit%20computer.html
>>
>> now this is what I call clever
>>
>> -mark
>>
>>
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