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Engineering Digital Design
book

Engineering Digital Design

by Richard F. Tinder
January 2000
Intermediate to advanced content levelIntermediate to advanced
884 pages
29h 39m
English
Academic Press
Content preview from Engineering Digital Design
254 CHAPTER 6 / NONARITHMETIC COMBINATIONAL LOGIC DEVICES
6.4 ENCODERS
By definition an encoder performs an operation that is the opposite to that of a decoder.
That is, an encoder must generate a different output bit pattern (code) for each input line
that becomes active. For a binary encoder, this requirement can be enforced only if one
output binary word of n bits is associated with only one of 2
n
“decimal” input lines
(0, 1, 2, 3,...,2
n
1). Obviously, if more than one input line is active, the output be-
comes ambiguous in such an encoder. The ambiguity problem is overcome by prioritizing
the input. When this is done the result is called a priority ...
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Publisher Resources

ISBN: 9780126912951