Encyclopedia of Electronic Components Volume 2

Chapter 15. decoder

integrated circuit

digital

decoder

In this Encyclopedia, a decoder is a digital chip that receives a binary-coded input and converts it to a decimal output by applying a logic state to one of a sequence of pins, each of which is assigned an integer value from 0 upward.

The term “decoder” also refers to components and devices that have other functions, such as decoding audio or video formats. These functions are not included here.

Other related components

• encoder (see Chapter 14)

• multiplexer (see Chapter 16)

What it Does

A decoder receives a binary-coded number on two or more input pins. It decodes that number and expresses it by activating one of at least four output pins.

The behavior of a decoder with a two-bit ...