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5. An SR flip-flop is a flip-flop that has set and reset inputs like a gated SR latch. Show how an SR flip- flop can be constructed using a D flip-flop and other logic gates.

5. An SR flip-flop is a flip-flop that has set and reset inputs like a gated SR latch. Show how an SR flip- flop can be constructed using a D flip-flop and other logic gates.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Please do question 5
4. Given a 100-MHz clock signal, derive a circuit using D flip-flops to generate 50-MHz and 25-MHz clock signals. Draw a timing diagram for all three clock signals, assuming reasonable delays. 5. An SR flip-flop is a flip-flop that has set and reset inputs like a gated SR latch. Show how an SR flip- flop can be constructed using a D flip-flop and other logic gates. 6. The gated SR latch in Figure 5.5a (from Text (Brown), reproduced below) has unpredictable behavior if the S and R inputs are both equal to 1 when the Clk changes to 0. One way to solve this problem is to create a set-dominant gated SR latch in which the condition S = R = 1 causes the latch to be set to 1. Design a set- dominant gated SR latch and show the circuit. R Clk S Clk R S 1 0 1 Q 0 0 I 0 R' S' (a) Circuit Q Q (c) Timing diagram Clk S R 0 1 1 1 1 X X 0 0 1 0 1 0 1 1 Q(1+1) Q(1) (no change) Q(1) (no change) 0 Time 1 X (b) Characteristic table 56°F
Transcribed Image Text:4. Given a 100-MHz clock signal, derive a circuit using D flip-flops to generate 50-MHz and 25-MHz clock signals. Draw a timing diagram for all three clock signals, assuming reasonable delays. 5. An SR flip-flop is a flip-flop that has set and reset inputs like a gated SR latch. Show how an SR flip- flop can be constructed using a D flip-flop and other logic gates. 6. The gated SR latch in Figure 5.5a (from Text (Brown), reproduced below) has unpredictable behavior if the S and R inputs are both equal to 1 when the Clk changes to 0. One way to solve this problem is to create a set-dominant gated SR latch in which the condition S = R = 1 causes the latch to be set to 1. Design a set- dominant gated SR latch and show the circuit. R Clk S Clk R S 1 0 1 Q 0 0 I 0 R' S' (a) Circuit Q Q (c) Timing diagram Clk S R 0 1 1 1 1 X X 0 0 1 0 1 0 1 1 Q(1+1) Q(1) (no change) Q(1) (no change) 0 Time 1 X (b) Characteristic table 56°F
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