Jk flip flop

All About Jk Flip Flop its Mechanism its Working and when path becomes 1 and 0 also described.

1. J-k flip flop & d-flip flop By Priyank SOni

2. What is flip-flop? Flip Flop Circuit can Maintain a binary state indefinitely Until directed by an input signal to switch states. The Major Differences Among Various types of flip-flops are in the number of inputs .

3. J-k flip flop A JK Flip Flop is a refinement of the RS Flip Flop. Inputs J & K behaves like inputs S & R to set and Clear Flip Flop. When inputs ae applied to both J and K Simultaneously, the flip-flop switches to its complement State , that is if Q=1,it switches to Q=0, and vice versa. A Clocked JK flip flop is Shown in Fig.

4. Truth Table: Graphical Symbol:

5. As Shown in the characteristic table in fig, the J-K Flip Flop behaves like an RS flip flop, expect when both J and K are equal to 1. When both J and K are 1,the clock pulse is transmitted through one NAND gate Only – the one whose inputs is connected to the flip flop output which is permenetly equal to 1. If Q=1, the output of the upper AND gate becomes 1 upon application of clock pluse , and the flip flop is cleread . If Q’=1, the output of lower AND gate becomes a 1 and the flip flop is set . The output state of the flip flop is complemented.

6. D Flip Flop: The D Flip Flop Shown in Fig. is a modification of The clocked RS flip-flop. The D input goes directly to the S input , and is complement, thorugh gate 5, is applied to The R input. As long as the clock pulse input is at 0, gates 3 and 4 have a 1 in their outputs. This Conferms to the requirement that the two inputs of a basic NAND flip flop remain initially at the 1 level.

7. The D input is Sampled during the occurrence of a clock pulse. If it is 1, the output of Gates 3 goes to 0, switching the flip flop to the set state. If it is 0,the output of gate 4 goes to 0, switching the flip flop to the clear state. The D flip flop receives the designation from its ability to transfer “data” into a flip flop. It is basically an RS flip flop with an inverter in the R inout .

8. Graphic Symbol: Truth Table:

9. This Type of flip flops is sometimes called a gated D-latch. The clock input is Often given the variable designation G to indicate that this enables the gated latch To make possible the data entry into the flip flop. The Symbol for a clocked D flip flop is shown in fig. The Characteristic table is listed in part and the characteristic equation is derived.

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