This CMOS logic-based circuit was found in the April 1974 issue of Radio Electronics magazine. The circuit is based on a period display and has hour and minute indications.
This small preamp for low impedance microphones was found in a Popular Electronics from November 1968....
The CA3162E and CA3161E pair were widely used to create a 3-digit digital display. This basic...
This circuit, which uses common components even today, was found in a 2001 documentation. It is an...