Programming instructions

CMOS
Multisim Component Reference Guide 7-48 ni.com
Decoder/demultiplexer truth table:
7.2.89 4556 (Dual 1-of-4 Dec/DEMUX)
This device contains two independent 1-of-4 decoders/demultiplexers.
Decoders/demultiplexer truth table:
7.2.90 4585 (4-bit Comparator)
The 4585 device is a 4-bit magnitude comparator that compares two 4-bit words (A and B),
whether they are “less than”, “equal to”, or “greater than”. Each word has four parallel inputs
(A0 to A3 and B0 to B3).
INPUTS OUTPUTS
E
A0 A1 O0 O1 O2 O3
0001000
0100100
0010010
0110001
1XX0000
1 = HIGH state (the more positive voltage)
0 = LOW state (the less positive voltage)
X = state is immaterial
INPUTS OUTPUTS
E
A0 A1 O0 O1 O2 O3
0000111
0101011
0011101
0111110
1XX1111
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