This circuit was found in the December 1977 issue of Radio Electronics magazine. The 4-digit circuit is based on TTL logic and must be powered by a voltage of 5 V.
This circuit was found in an Electronics Now. Its purpose is to generate clock pulses for a...
This circuit is from an American magazine Popular Electronics of March 1991. The circuit produces both...
This circuit was found in an Electronics Now from the 90's. The integrated regulator circuit and...