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APPLICATION OF ENCODER, DECODER, MULTIPLEXER & DEMULTIPLEXER

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by taksiah mohd on 20 August 2013

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Transcript of APPLICATION OF ENCODER, DECODER, MULTIPLEXER & DEMULTIPLEXER

APPLICATION OF ENCODER, DECODER, MULTIPLEXER & DEMULTIPLEXER
Detail 1
Detail 2
Detail 3
Detail 4
2n outputs

n
inputs

Binary
Decoder

Black box with n input lines and 2n output lines
Only one output is a 1 for any given input

Binary Decoder

F0

F1

F2

F3

Y

X

2-to-4
Decoder

Truth Table:

Y

X

F3 = XY

F2 = XY'

F1 = X'Y

F0 = X'Y'

From truth table, circuit for 2x4 decoder is:
Note: Each output is a 2-variable minterm (X'Y', X'Y, XY' or XY)

2-to-4 Binary Decoder

ENCODER & DECODER
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