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Sequential Logic Combination logic: outputs are based on a combination of present inputs only. Sequential logic: outputs depend on present and past inputs.

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Presentation on theme: "Sequential Logic Combination logic: outputs are based on a combination of present inputs only. Sequential logic: outputs depend on present and past inputs."— Presentation transcript:

1 Sequential Logic Combination logic: outputs are based on a combination of present inputs only. Sequential logic: outputs depend on present and past inputs only. –Flip-flops: common features: Bistable: stay in 0 or 1 state until appropriate conditions cause it to change state (memory unit) Two output: Q and Q’

2 RS Flip-flops

3 D Flip-flops DCLK (E)Q 0  0 1  1 Same as D, behaves like a register

4 JK Flip-flops

5 Digital Counter: Ripple & Synchronous Counters Q1Q1 Q2Q2 Q3Q3 100100 111111

6 Parallel Register Memory

7 Shift Register

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