TTL binary adder (CB22430E)

This circuit is based entirely on TTL gates. The circuit must be powered by a voltage of 5 V.

Modulated Oscillator 4093 (CB17577E)
DC Voltmeter (CB19294E)
This voltmeter for continuous voltages has several scales and is totally passive. The diodes are...
Transceiver Beep Generator (CB13474E)
This circuit is called by radio amateurs Roger Beep, which is the beep that is heard when the...