Combination Circuit

Abstract

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• Present output = present input

Important

Any combination circuit with $n$ input and $m$ outputs can be implemented with an $n:2^n$ decoder with $m$ OR gates.

This is useful when the circuit has many outputs, and each function is expressed with with a few minterms.

Example

• Adder
• Encoder
• Decoder
• Multiplexer
• De-multiplexer