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Digital Electronics

Q1:

A 4 bit ripple counter is in 0000 state. The clock pulses are applied and then removed. The counter reads 0011. The number of clock pulses which have occurred are

A 3

B 3 or 19

C 3 or 19 or 35

D none of the above

ANS:C - 3 or 19 or 35

After 16 pulses the counter resets. 0011 is 3. Hence clock pulses can be 3 or 3 + 16 or 3 + 16 + 16.



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