early embedded microprocs, was Re: OT: Tube Audio

Tony Duell ard at p850ug1.demon.co.uk
Sat Oct 22 15:37:41 CDT 2005

> Actually it might be nice to build a list of such 70's era products that
> (non-obviously) contain embedded microprocessors.

There was a TNS1000 microcontroller that had been masked-programmed to 
play 1 of about 20 different tunes. In the mid 1970s there was a rash of 
doorbells using that chip, both as commercial items and as magazine 
projects. At least one of the latter was called the 'Microchime' from 
what I remmeber.


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