Implementation Of Encoder And Decoder Using Ic 74138 & 74148

An encoder circuit has more input lines and fewer output lines.

A decimal to BCD encoder (10 line to 4 line) will convert (at any one time) one active input out of ten to a BCD code output.

An octal-to-binary encoder (8 line to 3 line) will convert (at any one time) one-of-eight inputs to a binary code output

A decodercircuitfewinputlinesand more output lines.

A binary-to-octal decoder converts 3 binary bits into 8 outputs (only one which will be active at one time)

A BCD decoder converts a 4-bit BCDcodeoninto 10 output outputs (only one which will be active at one time).

A hexadecimal decoder converts a 4-bit binary code on the input to a 1-of-16 output.

Decoders are often used in microprocessor systems to decode the address information from the microprocessor in order to select the correct memory chip.

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