Programming instructions

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Multisim Component Reference Guide 6-94 ni.com
6.4.16474xx92 (Divide-by-twelve Counter)
The 7492 counts from 0 to 11 in binary. It contains four master-slave flip-flops and additional
gating to provide a divide-by-two counter and a three-stage binary counter for which the
count cycle length is divide-by-six.
Counter truth table:
6.4.16574xx93 (4-bit Binary Counter)
The 7493 counts from 0 to 15 in binary. It contains four master-slave flip-flops and additional
gating to provide a divide-by-two counter and a three-stage binary counter for which the
count cycle length is divide-by-eight.
Binary counter truth table:
RESET INPUTS OUTPUT
RO1 RO2 Qd Qc Qb Qa
1 1 0000
0XCount
X0Count
RESET INPUTS OUTPUT
RO1 RO2 Qd Qc Qb Qa
1 1 0000
0 X Count
X 0 Count
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