If the clock frequency input to the circuit shown in the illustration were 2 kHz, what would be indicated at the output of 'FF-3' at the Q3 output? EL-0087

Question

If the clock frequency input to the circuit shown in the illustration were 2 kHz, what would be indicated at the output of 'FF-3' at the Q3 output?  EL-0087

Accepted Answer

Option A: 125 Hz. Each flip-flop in a binary counter chain acts as a frequency divider by two. With a 2 kHz input, the first stage outputs 1 kHz, the second 500 Hz, and the third (FF-3) outputs 250 Hz. The Q3 output of the third stage results in a frequency of 125 Hz.