2011-06-16 20.00.13

A 2 block wide edge triggered D flip flop.

D-latch 2

A diagram for the above design.

D flip-flop

Some more D flip-flop designs.

A D flip flop is a Flip Flop where the output changes to the D input, but when the clock line is on the output saves to the its current state and will not change unless the clock input is turned low again. This is a level-triggered D flip-flop.

Edge TriggeredEdit

An edge triggered D flip flop, such as the one to the right, will only change the output to the D input only when the clock line is pulsed. This is useful for keeping the memory until a 'refresh' button is pushed. The design above is a 2 block wide edge triggered D flip flop, so a set of them can be pushed right up to each other and can save space.

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