[sdiy] a provoking question about time

Mike Bryant mbryant at futurehorizons.com
Mon Jun 27 12:34:46 CEST 2022

> On Behalf Of Roman Sowa

> Was 8080 the only uP available back then? I guess there was no Z80 yet?

There was the 8008 which was a bit complex to use.  But there was also the NatSemi SC/MP which got used in a lot of small applications.  Perhaps a bit expensive for a commercial doorbell, but it paved the way for low end embedded applications.  Also there were some simple calculator chips you could retrain to do looping programs (no branching) by adding an external counter and a bit of logic.

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