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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
6.3 DECODERS/DEMULTIPLEXERS 253
Then by Eqs. (6.11) and if inverters are not to be used, the B and C bits must be comple-
mented:
m
0
= 000 011 = m
3
m
4
= 100 111 = m
7
m
1
= 001 010 = m
2
m
5
= 101 110 = m
6
m
2
= 010 001 = m
1
m
6
= 110 101 = m
5
m
3
= 011 000 = m
0
m
7
= 111 100 = m
4
.
Thus, to accommodate the mixed-logic inputs, the two functions in Eqs. (6.10) must be
connected to the decoder according to the renumbered functions
F[A(H ), B(L), C(L)] =
m(0, 2, 4, 7) and
G[A(H ), B(L), C(L)] =
M(0, 1, 5, 6).
Of course, if inverters are used on the B(L) and C(L) inputs, no complementation is
necessary and the functions are implemented according to Eqs. (6.10). ...
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Publisher Resources

ISBN: 9780126912951