early embedded microprocs, was Re: OT: Tube Audio

[Jim Beacon]

> > 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.
>
> -tony
>

My Father and I built one froma kit - "Chromachime", I think it was called.
Different tunes for the front and back door as well! The one we built is
still working in my parents house, after 25 years or so.

Jim.