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D flip-flop symbol. The D flip-flop is widely used, and known as a "data" flip-flop. The D flip-flop captures the value of the D-input at a definite portion of the clock cycle (such as the rising edge of the clock). That captured value becomes the Q output. At other times, the output Q does not change.
Symbol for a D-type Flip-flop: Date: 17 June 2006: Source: Own Drawing in Inkscape 0.43: Author: Inductiveload: Permission ... D-type flip-flop with Clock Enable (CE ...
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For the symbols below: Q is output, Q is inverted output, E is enable input, internal triangle shape is clock input, S is Set, R is Reset (some datasheets use clear (CLR) instead of reset along the bottom). There are variations of these flip-flop symbols.
change to nand as per comment on wikipedia page using image. i suspect whoever draw this forgot about the inverted inputs of a nand rs flip flops. 23:54, 17 June 2006 800 × 250 (30 KB)
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Registers (usually implemented as D flip-flops) synchronize the circuit's operation to the edges of the clock signal, and are the only elements in the circuit that have memory properties. Combinational logic performs all the logical functions in the circuit and it typically consists of logic gates .
Variety of random flip-flops. Random flip-flop comes in all varieties in which ordinary, edge triggered clocked flip-flop does, for example: D-type random flip-flop (DRFF). T-type random flip-flop (TRFF), JK-type random flip-flop (JKRFF), etc. Symbol for DRFF, TRFF and JKRFF are shown in the Fig. 1. Figure 2. Emulation of TRFF by DRFF and vice ...