JK Flip-Flop Circuit Diagram, Truth Table and Working JK flip-flop is a controlled Bi-stable latch where the clock signal is the control signal. Thus the output has two stable states based on the inputs which is explained using JK flip flop circuit diagram. JK Flip Flop Truth Table and Circuit Diagram - Electronics JK Flip Flop Circuit Diagram. The JK flip-flop is probably the most widely used and is considered the universal flip-flop because it can be used in many ways. In our previous article we discussed about the S-R Flip-Flop. Actually, a J-K Flip-flop is a modified version of an S-R flip-flop with no “invalid” output state . What is JK Flip Flop? Circuit Diagram & Truth Table JK Flip Flop The JK Flip Flop is the most widely used flip flop. It is considered to be a universal flip-flop circuit. The sequential operation of the JK Flip Flop is same as for the RS flip-flop with the same SET and RESET input. The difference is that the JK Flip Flop does not the invalid input states of the RS Latch (when S and R are both 1) JK Flip Flop name has been kept on the Flip-Flops and Sequential Circuit Design PDF file8.7 Design of a Counter Using the Sequential Circuit Approach The Master Slave JK Flip-Flop Timing Diagram. February 13, 2012 ECE 152A - Digital Design Principles 18 The JK Flip-Flop (cont) Counter Design with JK Flip-Flops 4-bit counter using flip-flops Schematic Circuit Diagram Schematic Diagram: Here we are going to make a flip-flop based 4 bit counter. ie it counts 0000-1111 in a binary system. The clock of the first flip-flop is either natural crystal clock or output of 555 timer IC =. As we know if the J and K input pin of the flip-flop are both high then the output toggles every clock cycle.