This circuit can be used as an answering password system in a store, office, or other location. The circuit is from Intersil using components of the time. The circuit is from the 80's.
The circuit used is not common today, as the configuration is from 1994. The circuit is from the...
This circuit was found in old documentation from Analog Devices. The integrated circuit is from...
Suggested by General Electric in 1980s documentation, this circuit makes use of PUTs that are not...