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A rectangle with D and clock inputs and Q outputs.
Also known as: Data flip-flop, D-type flip-flop, Rectangle with D and Q
Sometimes confused with: D latch
A D flip-flop copies its data input to its output at one edge of the clock and holds it until the next. The small triangle at the clock input is what says 'edge triggered' — without it the symbol would mean a level-sensitive latch, which behaves quite differently.
Denotes a data flip-flop: a one-bit store that copies its D input to its Q output on a clock edge.
Contexts: Electrical equipment
Carries a small triangle at the clock input to mark edge triggering; its absence indicates a level-sensitive latch instead.
Contexts: Electrical equipment
Provides both Q and its complement as outputs, the bar over the second Q being the inversion.
Contexts: Electrical equipment
An upright rectangle with the letter D and a small triangle marked on its left side and the letter Q on its right.