flip flop

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flip flop
latch
what is the difference between a latch and a flip flop?
ASKED: October 22, 2007  5:41 PM
UPDATED: October 22, 2007  8:11 PM

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Below is an excerpt from a good explanation of the <a href=”http://dept-info.labri.fr/~strandh/Teaching/AMP/Common/Strandh-Tutorial/flip-flops.html”>difference between a latch and a flip-flop</a> .

In the same way that gates are the building blocks of combinatorial circuits, latches and flip-flops are the building blocks of sequential circuits.

While gates had to be built directly from transistors, latches can be built from gates, and flip-flops can be built from latches. This fact will make it somewhat easier to understand latches and flip-flops.

Both latches and flip-flops are circuit elements whose output depends not only on the current inputs, but also on previous inputs and outputs. The difference between a latch and a flip-flop is that a latch does not have a clock signal, whereas a flip-flop always does.

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