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The basic application of the flip-flop is to build counters and storage systems.
Mostly used in counters and shift registers.
The application is simple a flip for every input change
3 flip flops are required.
The simplest electronic counters uses a little memory made with flip-flops (a register)(look it up on wikipedia) and some and, or and not ports. When the input is triggered the value in the register is increased, because the and, or and not ports are connected in order to do so.
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A flip flop is a quiescent component meaning it can have one of two states A trigger or signal is required to force the flip flop to change state
flip flop
It takes nine flip flops to count from 0 to 511.
1. Easier to design 2. No propagation delay Actually the second one is the most important reason. In designing circuits that work at high clock rates, ripples will result in errors so synchronization is very very important.
If counting in binary, 12 flip flops If counting in decimal (BCD), 15 flip flops (3, 4, 4, 4)
This flip-flop toggles (Q changes state) on the negative going edge of the clock pulse. T acts as an ENABLE / INHIBIT control. Q will only toggle on the negative edge of the clock pulse, when T is high. Below is shown a D type flip-flop connected as a toggle type. On each clock pulse positive going edge, Q will go to the state bar Q was before the clock pulse arrived. Remember that bar Q is the opposite level to Q. Therefore Q will toggle.