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Counters

Q1: A MOD-12 and a MOD-10 counter are cascaded. Determine the output frequency if the input clock frequency is 60 MHz.

A 500 kHz

B 1,500 kHz

C 6 MHz

D 5 MHz

ANS:A - 500 kHz

If two counters are cascaded with MOD-M followed by MOD-N, then combined counter is (M x N) and counter is called" MOD (M x N)" counter.

Output frequency = fin/ (M x N).
Output frequency (fout) = (60 * 106) / (12 * 10).
Output frequency (fout) = 500 KHz.



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