The most significant input (A3) produces an useful inhibit function when the ’42’ is used as a 1-of-8 decoder. The A3 input can also be used as the data input in an 8-output demultiplexer application.

It generally has 4 input lines and 7 output lines. Here we design a simple display decoder circuit using logic gates. Even though commercial BCD to 7 segment decoders are available, designing a ...

Circuit Diagram. In this BCD to 7-Segment Driver circuit, we are giving input through the push buttons as LOW or HIGH to the Pins 1, 2, 6, and 7.PIN 3 (lamp test) is directly connected to 5v, used for ...