Rockwell PPS-4 info (was 8008 v. 4004...)

[Chuck Guzis]

On 18 Dec 2008 at 9:31, Brent Hilpert wrote:

> 60's era ones yes, but by 1978 or earlier they were like this:
> 
>   http://www.ssplprints.com/image.php?imgref=10240744
> 
> 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.

Cheers,
Chuck