Decoders are circuits with two or more inputs and one or more outputs, resulting by combining various types of gates. Their basic function is to accept a binary word (code) as an input and crea­te a different binary word as an output. A typical decoder is the so-called full adder (3 inputs-2 outputs) implementing the addition of two one-digit numbers (Ai, Bi) taking into consideration the status of any previous carry (Ci-1), resulting into the sum (Si), and generating a new carry (Ci). [1]


  1. Prof. C. E. Efstathiou. "Digital Electronics: Gates, Decoders, Multiplexers." Accessdate 1/2/2016.


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