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Counters - Technical MCQs

Q1:

How many AND gates would be required to completely decode ALL the states of a MOD-64 counter, and how many inputs must each AND gate have?

A 128 gates, 6 inputs to each gate

B 64 gates, 5 inputs to each gate

C 64 gates, 6 inputs to each gate

D 128 gates, 5 inputs to each gate

ANS:C - 64 gates, 6 inputs to each gate

MOD = 64;
MOD = 2^6;

Because,
STARTING MOD = 000000.
.
.
.
ENDING MOD = 111111 FOR UNDERSTANDING(32 16 8 4 2 1).
Total state = 64(0 to 63).

For every state need of 6 input gate then,
Total no.of AND gate = 64;(every 6 input AND GATE).