Summary Latch & Flip-Flop

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Presentation transcript:

Summary Latch & Flip-Flop Gated Latch Flip-Flop Output Characteristics Output / next state depends to: current inputs & previous outputs / state Output / next state depends to enable/gate input current inputs edge-triggered clock

Basic Operation Truth-table S-R Latch/FF Block Diagram Basic Operation Truth-table Latch Gated Latch Flip-Flop For: En = 1 (Gated Latch) & FF S R Q Q’ 1 - S Q S Q S Q En R Q’ R Q’ R Q’ S R En Q Q’ 1 - X S Q R Q’

Basic Operation Truth-table D Latch/FF Block Diagram Basic Operation Truth-table Latch Gated Latch Flip-Flop For: En = 1 (Gated Latch) & FF D Q Q’ 1 D Q D Q D Q En Q’ Q’ Q’ D Q Q’ D En Q Q’ 1 X

Basic Operation Truth-table J-K FF Block Diagram Basic Operation Truth-table Latch Gated Latch Flip-Flop Nil J K Q Q’ J K Q Q’ 1 J Q K Q’