What type of counter is IC 74191?
74191 Datasheet, Equivalent, Up/Down Counter.
What is a function of IC 74191?
Functional Description. The 74F191 is a synchronous up/down 4-bit binary counter. It contains four edge-triggered flip-flops, with internal gating and steering logic to provide individual preset, count-up and count-down operations.
Which of the following is correct for a gated D flip flop?
Which of the following is correct for a gated D flip-flop? Explanation: If clock is high then the D flip-flop operate and we know that input is equals to output in case of D flip-flop.
What is a updown counter?
An up-down counter is a combination of an up-counter and a down-counter. It can count in both directions, increasing as well as decreasing. Depending on the type of clock inputs, counters are of two types: asynchronous counters and synchronous counters.
Where is synchronous counter used?
Some common uses and application of synchronous counters are follow: Alarm Clock, Set AC Timer, Set time in camera to take the picture, flashing light indicator in automobiles, car parking control etc. Counting the time allotted for special process or event by the scheduler.
What is Asynchronous and synchronous counter?
1. In synchronous counter, all flip flops are triggered with same clock simultaneously. In asynchronous counter, different flip flops are triggered with different clock, not simultaneously.
Is ripple counter asynchronous?
Some of the features of ripple counter are: It is an asynchronous counter. Different flip-flops are used with a different clock pulse. All the flip-flops are used in toggle mode.
Why asynchronous counters are called ripple counters?
Asynchronous counters are slower than synchronous counters because of the delay in the transmission of the pulses from flip-flop to flip-flop. Asynchronous counters are also called ripple-counters because of the way the clock pulse ripples it way through the flip-flops.