This circuit was obtained from a 1966 General Electric documentation. It can serve as a basis for demonstrations of how to decode segments of a display using discrete components.
With the coded activation of the relays, it is possible to control which of the 16 outputs...
The integrated circuit used in this application is not very common. Transistors and resistors...
This simple circuit makes use of neon lamps to indicate the voltage of a power grid. The lamps are...