The SR flip-flop can be considered as a 1-bit memory, since it stores the input pulse even after it has passed. For this reason the circuit may also be called a Bi-stable Latch. When the circuit is triggered into either one of these states by a suitable input pulse, it will ‘remember’ that state until it is changed by a further input pulse, or until power is removed. Just two inter-connected logic gates make up the basic form of this circuit whose output has two stable output states. The basic building bock that makes computer memories possible, and is also used in many sequential logic circuits is the flip-flop or bi-stable circuit.
#TIMING DIAGRAM EDGE TRIGGERED FLIP FLOP SOFTWARE#
Use software to simulate SR flip-flops. Recognise alternative forms of SR flip-flops. Construct timing diagrams to explain the operation of SR flip-flops. Compile truth tables for SR flip-flops. Recognize SR flip-flop integrated circuits. Recognize standard circuit symbols for SR flip-flops. Describe typical applications for SR flip-flops. Describe SR flip-flop circuits and can:. After studying this section, you should be able to:. Other JK flip flop IC’s include the 74LS Dual JK flip-flop with clear, the 74LS Dual positive-edge triggered JK flip flop and the 74LS Dual negative-edge.File:JK timing schematron. The TTL 74LS73 is a Dual JK flip-flop IC, which contains two individual JK type bistable’s within a single chip enabling single or master-slave toggle flip-flops to be made. Question 17 Flip-flops often come equipped with asynchronous input lines as well as synchronous input lines. shows the basic configuration (without S and R inputs) for a JK flip-flop using only four NAND gates.Īsk students to identify those regions on the timing diagram where the flip-flop is being set, reset, and toggled. The JK Flip-flop is also called a programmable flip-flop because, using its inputs, J, K, S and R, it can be made to mimic the action of any of the other flip-flop types.įig. Inputs J and K behave like inputs S and R to set and clear the flip-flop (note that in a JK flip-flop, the letter J is for set and the letter K is for clear). Introduction - JK Flip-Flop.Ī JK flip-flop is a refinement of the SR flip-flop in that the indeterminate state of the SR type is defined in the JK type. JK flip-flop is a sequential bi-state single-bit memory device named after its as ( Table II) timing diagram for positive edge-triggered jk flip flop.Typical applications for SR Flip-flops. The standard symbol for the J-K FF is shown in view A of figure Figure - J-K flip-flop: A. J corresponds The timing diagram for the negatively triggered JK flip-flop. The JK flip-flop has two inputs, labeled J and K. The clock pulse is given to the master J-K flip flop and it is sent through a NOT Gate and thus Master Slave J-K Flip Flop Timing Diagram. Figure 1 shows the Timing Diagram of a Positive-Edge-Triggered D Flip-flop and Table 1 is its Figure 1: Timing Diagram of the J-K Flip-flop Counter.
0 kommentar(er)
