4. In the following figure, 4-bit asynchronous UP-COUNTER is given. a) Determine total propagation delay time, if each flip-flop has a propagation delay for 120 ns. b) Determine the maximum clock frequency at which the counter can be operated. c) If clock frequency is 80 KHz, find frequency fo3. HIGH Clock A Ka FF-0 CLK 8 18 J₁ FF-1 CLK K₁ Q₁ 18 Ja A FF-2 CLK K₂ Q₂ 18 Ja FF-3 CLK K₂ Q₂ 18
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logic circuit
just draw the graph
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- 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…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.)Determine the total time required to serially transfer the eight bits contained in waveform A of Figure the first to be transferred. The 1 MHz clock is used as reference. and indicate the sequence of bits. The left-most bit is Clock A
- Q6. 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 S3(c) For each of the following parts, fill in the respective row of the timing diagram shown in Figure 5. (i) Find the input for a rising-edge-triggered D flip-flop that would produce the output Q as shown in Figure 5. (ii) Find the input for a rising-edge-triggered T flip-flop that would produce the output Q as shown in Figure 5. Clock D Figure 5Discussion 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?
- 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 CLKH.W 1. Convert SR flip-flop to JK flip-flop. 2. The following serial data have been applied to the flip-flop. Assume Q = 0 initially and there is one clock pulse for each bit. Determine the output sequence. K J,-10101 101 K, - I100101 J2 =11000110 K2 = 10101011. 152- Using JK Flip flops, a 2-bit counter will be designed that will count down ((11-10-01-00) when the input is "0") and the random sequence given when the input is "1" (00-01-11-10). a) Construct the state table for the sequential circuit. b) Obtain the simplified input equations for flip-flops. c) Draw the logic circuit for the 2-bit counter.
- What are logic circuits, what are the similarities and differences between asynchronous numbers and synchronous counters? Answer the following for the 3 bit (0 to 7) binary synchronous counter circuit using rising trigger JK Flip Flops.a) Construct the current state accuracy table of the synchronous counter circuit.b) Construct the future state truth table of the synchronous counter circuit.c) Create the transition table of the counter circuit.d) Obtain Karnaugh maps by constructing the transition table of the counter circuit.e) Draw the circuit consisting of flip flops. Put LEDs on the outputs and obtain the counting diagrams of the outputs.Problem Statement: You design a circuit of a decade counter that will count from 0-9 only. You will only be using the following: (a) Button – only 1 button will be used to trigger the counting. (b) Flip flop IC to used as counting circuit with 4 - BITS binary OUTPUT. (c) IC's for Decoding the Binary OUTPUT of Flip-flops to Decimal Output (d) 7- Segment Display to display the OUTPUT from 0-9. Block Diagram: 4 Bit Binary Flip-Flop 7-Segment Display Button Decoder Circuits CircuitsObtain the state diagram for the following state machine. Consider that the flip flop above is the MSB.