Race Around Condition in JK Flip flop When both J and K input of a JK Flip flop is set to 1, the output of the JK flip-flop will toggle between 1 and 0, which make the output of the flip-flop unstable. This is called the race-around condition in a JK Flipflop. to avoid this […]
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The JK Flip flop can be viewed as a modification of the SR Flip flop. The intermediate state in a JK Flip flop is more refined and precise than that of an SR Flip flop. Design of JK Flip flop The design of a JK Flip flop is similar to that of an SR Flipflop.
Flip flops are synchronous bistable devices, also known as bistable multivibrators. The term synchronous means that changes in the output occur in synchronization with control input called a clock. The basic form of an edge triggered flip-flop is the SR flipflop. The logic diagram of an SR flip-flop is shown in the figure. Circuit Diagram
A latch is a temporary storage element that has two stable states (bistable). They operate in signal levels rather than signal transitions. An active-HIGH input SR latch is formed with two cross-coupled NOR gates and an active-LOW input latch is formed with two cross-coupled NAND gate. An SR Latch with two cross-coupled NOR gate is
Triggering is the process of making a circuit active. Triggering allows the circuit to take input and generate output. The circuit will become active at certain states of clock pulse depending upon the triggering methods we used. What is a Clock? A clock is a signal that oscillates between a high and a low state.
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Combinational circuits produce an output based on the values of current input variables only. In sequential circuits, the present output depends on the present input as well as the previous output (previous input variables). That is sequential circuits consist of memory elements capable of storing binary information. The state of a sequential circuit at a
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A demultiplexer(DEMUX) performs the reverse operation of a multiplexer. It takes input from one line and distributes it to a given number of output lines. It is also known as a data distributor. A demultiplexer with 2n output lines should have n data-selector lines. 1:4 Demultiplexer A 1:4 demultiplexer takes input from one line and
Multiplexer(MUX) is a device that allows digital signals from several sources to be routed onto a single line of output. It has several input lines and a single output line. It has also data selector lines which specifies which input signal has to be switched to the output line. n data selector lines are required
An encoder is a combinational circuit that performs reverse function of a decoder. It accepts 2n input and produces output in n output lines. This process of generating codes based on the values of input lines is called encoding. 4 to 2 Line Encoder A 4 to 2 line encoder consists of 4 input lines
In BCD (Binary Coded Decimal), a binary pattern is used to represent a decimal number. A 7 segment display is used to display hexadecimal numeral by seven LEDs arranged in a definite pattern as shown in figure (a). A BCD to 7 segment decoder accepts the BCD code on its input and provide output to
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