Found in a Popular Electronics from the 90s, this game can be seen in other configurations on this site. The circuit uses components that are still common today.
This circuit with RIAA equalization is from 1985 US documentation. The circuit has a flat response...
This simple calibration circuit consists of a crystal oscillator that generates an accurate 100 kHz...
This circuit from a Radio Electronics from December 1974 was used in color televisions of the...