Rs flipflop or SR flipFlop
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Rs flipflop or SR flipFLop You can watch my lectures at: Digital electronics playlist in my youtube channel: https://www.youtube.com/channel/UC_fItK7wBO6zdWHVPIYV8dQ?view_as=subscriber My Website : https://easyninspire.blogspot.com/
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Rs flipflop or SR flipFlop
- 2. Today's Topic Sequential Logic Circuits • RS Flip-Flop
- 3. RS (or) SR Flip-Flop • The S-R flip-flop is basic flip-flop among all the flip-flops. • All the other flip flops are developed after SR-flip-flop. • SR flip-flop operates with only positive clock transitions (or) negative clock transitions. • Whereas, SR latch operates with enable signal.
- 4. • The circuit diagram of SR flip-flop is shown in the following figure. • This circuit has two inputs S & R and two outputs Q(t)& Q(t)’. The operation of SR flip flop is similar to SR Latch. • Consider, this flip-flop affects the outputs only when positive transition of the clock signal is applied instead of active enable. SR Latch
- 5. Clk S R Q Q’ +ve 0 0 NC NC +ve 0 1 0 1 +ve 1 0 1 0 +ve 1 1 - - -ve X X SR Flip-Flop Truth Table
- 6. SR Flip-Flop Truth Table CLK S R Q Q’ State +ve 0 0 Q Q’ No Change +ve 0 1 0 1 RESET +ve 1 0 1 0 SET +ve 1 1 1 or 0 0 or 1 Invalid -ve X X Q Q’ No Change
- 7. S R Q(t) Q(t+1) State 0 0 0 0 No Change 0 0 1 1 No Change 0 1 0 0 RESET 0 1 1 0 RESET 1 0 1 1 SET 1 0 0 1 SET 1 1 1 - Invalid 1 1 0 - Invalid Characteristic Table of S-R Flip-Flop
- 8. In Next Class • D Flip Flop
- 9. • A