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.

BCD-to-Decimal 4bit relay decoder This board was born from my passion for retrocomputers and electronics, as an electromechanical reinterpretation of a modern circuit with the aim of creating a set of ...

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 ...