Flip Flop
- A Flip Flop is an electronic circuit with two stable states.
- Also known as Ledge.
- It can be used to store binary data.
- It is the basic storage element in sequential logic
- Flip-flops and latches are fundamental building blocks of DE (digital electronics).
Used as Data Store Elements.
Types -
- SR Flip Flop.
- D Flip Flop.
- JK Flip Flop.
- T Flip Flop.
SR Flip Flop
- In SR Flip Flop S represent Set and R represent Reset.
- S & R termed as I/P.
- It operates with the +ve & -ve CLK transition.
S R Q Q’
0 0 0 1
0 1 0 1
1 0 1 0
1 1 ∞ ∞
JK Flip Flop
- In JK Flip Flop another Flip Flop required in DE.
- Sometimes known as improved version of SR.
- In case of JK Flip Flop we need NAND gate.
- If J & K are both low no change occures.
- If J & K are both high at clk edge then o/p will Toggle.
J K Q Q’
0 0 0 0
0 1 0 0
1 0 0 1
1 1 0 1
0 0 1 1
0 1 1 0
1 0 1 1
1 1 1 0
D Flip Flop
- Advanced version of JR.
- Also known as Delay Flip Flop.
- It operate with +ve & -ve clk transition.
- Its ability to store and remember the data.
- D Flip Flop consists of 4 following.
- Data I/P.
- Clock I/P.
- Set I/P.
- Reset I/P.
Clock D Q Q’
↓ » 0 0 0 1
↑ » 1 0 0 1
↓ » 0 1 0 1
↑ » 1 1 1 0
T Flip Flop
- T means Toggle.
- A T flip flop is like JK flip-flop.
- It is a single input version of JK flip flop.
- It has only 1 input along with the clock input.
- T Flip Flop is obtained by connecting both inputs J and K together.
- Ability to complement its state i.e (0,1).
T Q Q (t+1)
0 0 0
1 0 1
0 1 1
1 1 0
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