2-bit asynchronous binary up counter o/p at fourth c/k edge

Q.  If the output of two-bit asynchronous binary up counter using T flip flops is '00' at reset condition, then what output will be generated after the fourth negative clock edge?
- Published on 29 Sep 15

a. 00
b. 01
c. 10
d. 11

ANSWER: 00

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