Example: 4 A bit asynchronous binary counter is shown in the Figure. Each flip-flop is negative edge-triggered. Develop a timing diagram showing the Q output of each flip-flop
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- 9. Analysis of Synchronous Counters, in the following figure, write the logic equation for each input of each flip-flop. Determine the next state for state 010,011,100,111 as Q2Q1Q0 sequence. FF0 FFI FF2 Ko K, K2 CLKQ6. For the following state graph, construct a transition table. Then, give the timing diagram for the input sequence X = 101001. Assume X changes midway between the falling and rising edges of the clock, and that the flip-flops are falling-edge triggered. What is the correct output sequence? So S3Discussion 1. For a master-slave J- K Flip - Flop with the inputs below, sketch the Q output waveform. Assume Q is initially low. Assume the Flip - Flop accepts data at the positive-going edge of the clock pulse. 2. The following serial data stream is to be generated using a J-K positive edge-triggered Flip – Flop. Determine the inputs required. 101110010010111001000111. 3. By using J- K flip/flop from RS Flip - Flop use block diagram and other gates. 4. a- what are the application of Flip - Flop. b- What is the difference between the Flip - Flop circuit and the other combinational logic eircuits?
- a) Design a single-digit decade counter that counts from 0 to 9 and repeats. The single-digit decade counter should be built by a cascaded synchronous binary counter (74LS163) and other basic logic gates. Simulate the complete counter circuit by OrCAD and PSPICE. Capture the circuit schematic and the simulated waveform. (Define the simulation timings for at least one full counting cycle from 0 to 9 and back to 0.) (Hint: Use the DigClock input from the SOURCE as shown below and setup the CLK ONTIME and OFFTIME accordingly for the clock source.) 1/6 Pat DigClock Part List OFFTIME = SuS DSTM1 ONTIME = DELAY= STARTVAL = 0 OPPVAL = 1 Sus EUK FleStim AC Lbrajes Design Cache b) Read the specification of 74LS47 (BCD-to-7-Segment Decoder shown in Appendix) to see how the logic IC operates to drive a 7-segment LED display. Draw the circuit connection of the decade counter in (a) and the decoder to display the count value on the 7-segment LED display. Further explain why common anode…5Fioure 0.4.3 A and B. complete the timing diagram in Figure Q.4.2 f Q.4 Answer the following questions. Clearly show your work. (a) Figure Q.4.1 shows a negative edge triggered T and JK flip-flops connected in series, Assume the outputs of all flip-flops are initially zerö (i.e. A = B = 0), 5 UTM 8 UTM 5 UTM 8 UTM UTM S UTM 5 UTM 5 UT UTM J 5 UTM 8 UTM 5 UTM B UT ck 5 UT UTM K 5 UTM 5 UT 8 UTM 5 UTM & UTM UTM Figure Q.4.1 clk 3 UTM 5 UT 8 UTM 8 UTM UTM 5 UTM A 8 UTM 5 UT 5 UTM & UTM 8 UTM 5 UTM 5 UTM 8 UTM 5 UTM 5 UT Figure Q.4.2 UTM 5 UTM M 8 UTM and basic gates. The counter should change state at every negative edge of the 8 UTM & UT UTM Q.4.3 using D flip-flops 5 UTM 5 UTM 5 U M& UTM 3 UTM 8 UT 6 UTM 5 UTM 8 UTM 8N TM 8 UTM 111 5 UTM 5 UT ITM 5 UTM 101 5 UTM 8 UTM TITM 8 UTM 5 UT UTM 5 UTMDetermine the Q and Q' output waveforms of the D flip-flop with D and CLK inputs are given in figure (5). Assume that negative edge triggered flip-flop is initially RESET. E, CLK D. 0. 5.
- F4 Using two flip-flops and basic gates, construct the circuit of the given state diagram below. Provide the following: State Table, Flip-flop equations, Circuit Diagram. Follow correct label names: Q0, Q1 – prev/present states D0, D1 – D-FF names X – input Y - output3 Consider a T flip-flop constructed from the negative edge triggered JK flip-flop with active low preset and clear in Figure 5. Draw the output Q given the following timing diagram: CLK PRE CLA -a. Construct a synchronous 3-bit Up/Down counter with irregular sequence by using J-K flip-flops. The state diagram is shown below. Y = 1 00 010 110 Y =0 101 111 0, 011 100 001 b. Construct an asynchronous counter with a modulus of eleven by using J-K flip-flops. The counter should follow the straight binary sequence from 0000 through 1011. c. The counters are used in cascading in order to achieve the higher modulus operation. A certain application requires an overall modulus of 39,000 which can be achieved by placing the counters in cascading. You are requested to design a circuit for the said purpose by using 74HC161.
- The figure above shows a synchronous countdown with asynchronous preset. The CE input enables counting when set to 1. The RC output is activated when the count reaches the minimum and CE=1. Design the counter using JK type flip-flops with asynchronous preset and combinational circuitry. Draw the logic diagram of the counter circuit.Task 1: Custom Sequence Counter Using JK Flip Flop, Design a counter circuit that cycles through the sequence: 0, 5, 4, 6, 1, 7, and repeats. Follow these steps: a) State Diagram: Draw a state diagram representing the sequence. Each state should be expressed as a binary number. b) State Table: Create a state table for the counter, detailing current states, next states, and outputs. c) Flip-Flop Input Equations: From the state table, derive the input equations for the flip- flops. Treat any unused states as don't-care conditions. d) Simplification using K-maps: Use Karnaugh maps to simplify the flip-flop input equations. Optionally, verify your simplifications using Multisim. e) Circuit Diagram: Draw the circuit diagram. Task 2: 3-bit Up/Down Counter Using Flip Flop of your choice, design a 3-bit counter that counts up or down based on an input signal X. The counter should behave as follows: Initial State: On powerup, the counter starts at 0. Count Up (X=1): Sequence progresses through…a) Design a single-digit decade counter that counts from 0 to 9 and repeats. The single-digit decade counter should be built by a cascaded synchronous binary counter (74LS163) and other basic logic gates. Simulate thecomplete counter circuit by OrCAD and PSPICE. Capture the circuit schematic and the simulated waveform.(Define the simulation timings for at least one full counting cycle from 0 to 9 and back to 0.)(Hint: Use the DigClock input from the SOURCE as shown below and setup the CLK ONTIME and OFFTIME accordingly for the clock source.)