Digital Electronics/Synchronous Device/Flip Flop

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Flip Flop[edit]

Flip Flop is a Digital Circuit can be constructed from two NAND or NOR gates to form a circuit that has 2 stable states Set or RESET , 1 Unused state and 1 store state

NAND Flip Flop[edit]

Configuration[edit]

SR Flip-flop Diagram.svg

Truth Table[edit]

SR latch operation
S R Action
0 1 Q = 1
1 0 Q = 0
1 1 Previous state

Symbol[edit]

SR (NAND) Flip-flop.svg

NOR Flip Flop[edit]

Configuration[edit]

RS Flip-flop (NOR).svg

Truth Table[edit]

SR latch operation
S R Action
0 1 Q = 1
1 0 Q = 0
1 1 Keep state

Symbol[edit]

Inverted SR latch symbol.png