The integrated circuits used in this configuration are not common today. The circuit is from the 1983 Intersil Databook. The indicator is 8 digits.
This circuit suggested by Motorola can be used as LED high frequency modulator. One possible...
Found in a 1969 EEE, this circuit is based on an operational amplifier of the time and on old type...
This unit is intended to power 2 AA or AAA battery powered applications from the car battery,...