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Divide-by-N Counters

A common feature of many digital circuits is a high-frequency clock with a square wave output. If this signal of frequency f drives the clock input of a JKFF wired to toggle on each trigger, the output of the flip-flop will be a square wave of frequency f/2. This single flip-flop is a divide-by-2 counter. In a similar manner an n flip-flop binary counter will yield an output frequency that is f divided by .

Doug Gingrich
Tue Jul 13 16:55:15 EDT 1999