Rockwell PPS-4 info (was 8008 v. 4004...)
cclist at sydex.com
Thu Dec 18 13:05:18 CST 2008
On 18 Dec 2008 at 9:31, Brent Hilpert wrote:
> 60's era ones yes, but by 1978 or earlier they were like this:
> LED display, keypad input. A friend has one, still in use, but I haven't bugged
> him to let me look inside it. Could have been done with an ASIC of course but
> it would also have been a good candidate to have used some mask-programmed 1 or
> 2 chip micro such as the PPS-4/1.
A Toshiba microwave (just junked) from the same time has 4000-series
SSI CMOS and not much more. Same goes for the 1978 Amana still
sitting on my kitchen counter. I think microprocessors might not
have reached a competitive price point yet.
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