R-S Flip Flops
RS-type NAND Flip Flop
A basic logical device for information storage is the flip-flop (abbr. FF). A flip-flop can stay in one of two logic states. To change this stage it needs a new input signal. Thus a flip-flop is a one bit memory. A flip-flop containing a 1 is said to be set, if it contains a 0 it is reset. There exist three basic types of flip-flops:
* Memory flip-flops have special inputs to be set or reset. The flip-flop preserves its state as long as there is no new input signal.
* Delay flip-flops output the state their input had one cycle ago. If the input signal changes at ste…
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