Programming instructions

TTL
Multisim Component Reference Guide 6-92 ni.com
6.4.16074xx85 (4-bit Mag COMP)
This 4-bit magnitude comparator performs comparison of straight binary and straight BCD
(8-4-2-1) codes.
4-bit magnitude comparator truth table:
6.4.16174xx86 (Quad 2-In XOR)
Logic function:
COMPARING
INPUTS
CASCADING
INPUTS
OUTPUTS
A3, B3 A2, B2 A1, B1 A0, B0 A>B A<B A=B A>B A<B A=B
A3>B3XXXXXX100
A3<B3XXXXXX010
A3=B3 A2>B2 X X X X X 1 0 0
A3=B3 A2<B2 X X X X X 0 1 0
A3=B3 A2=B2 A1>B1 X X X X 1 0 0
A3=B3 A2=B2 A1<B1 X X X X 0 1 0
A3=B3 A2=B2 A1=B1 A0>B0 X X X 1 0 0
A3=B3 A2=B2 A1=B1 A0<B0 X X X 0 1 0
A3=B3A2=B2A1=B1A0=B0100100
A3=B3A2=B2A1=B1A0=B0010010
A3=B3A2=B2A1=B1A0=B0001001
A3=B3A2=B2A1=B1A0=B0XX1001
A3=B3A2=B2A1=B1A0=B0110000
A3=B3A2=B2A1=B1A0=B0000110
A3=B3A2=B2A1=B1A0=B0011011
A3=B3A2=B2A1=B1A0=B0101101
A3=B3A2=B2A1=B1A0=B0111111
A3=B3A2=B2A1=B1A0=B0110110
A3=B3A2=B2A1=B1A0=B0000000
Y = AB
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