What is the use of ripple counter?
Ripple counter is a special type of Asynchronous counter in which the clock pulse ripples through the circuit. The n-MOD ripple counter forms by combining n number of flip-flops. The n-MOD ripple counter can count 2n states, and then the counter resets to its initial value.
What is called ripple counter?
Asynchronous counters are sometimes called ripple counters because the data appears to “ripple” from the output of one flip-flop to the input of the next. They can be implemented using “divide-by-n” counter circuits.
Why is a ripple counter used in digital clocks?
Timing diagram – Let us assume that the clock is negative edge triggered so above counter will act as an up counter because the clock is negative edge triggered and output is taken from Q. Counters are used very frequently to divide clock frequencies and their uses mainly involve in digital clocks and in multiplexing.
Why is a ripple counter called an asynchronous counter?
The counter in which external clock is only given to the first Flip-flop & the succeeding Flip-flops are clocked by the output of the preceding flip-flop is called asynchronous counter or ripple counter. The name ripple counter is because the clock signal ripples its way from the first stage of Flip-flops to the last stage.
Why are flip flops called a ripple counter?
All subsequent flip-flops are clocked by the output of the preceding flip-flop. Asynchronous counters are also called ripple-counters because of the way the clock pulse ripples it way through the flip-flops.
What is the mod of a ripple counter?
The MOD of the ripple counter or asynchronous counter is 2 n if n flip-flops are used. For a 4-bit counter, the range of the count is 0000 to 1111 (2 4 -1). A counter may count up or count down or count up and down depending on the input control. The count sequence usually repeats itself.