hw6_sol

hw6_sol - ELEC 151 Homework 6 solution(1 The content of a...

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ELEC 151 - Homework # 6 solution (1) The content of a 4-bit register is initially 1100. The register is shifted six times to right with the serial input being 101101.What is the content of the register after each shift? Ans: 101101->1100: 1110, 0111,1011,1101, 0110,1011; (2) Enclose the binary counter with parallel load of Fig.6-14 in a block diagram showing all inputs and outputs. a) show the connections of four such blocks to produce a 16-bit counter with parallel load. b) Constructed a binary counter that counts from 0 through binary 64. Ans: a) Block diagram of circuit: 16-bit counter needs 4 circuits with output carry connected to the count input of next stage. b) Count Load Clock Clear Carry Out Figure 6-14 Figure 6-14 Figure 6-14 Load Count Clear=1 Clk Count=1 Clear=1 Clk Carry Out Load 2 6 = 64 0

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(3) Design a counter with T flip-flops that goes through the following binary repeated sequence:0,1,3,7,6,4. Show that when binary states 010 and 101 are considered as don’t care conditions, the counter may not operate properly. Find a way to correct the
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hw6_sol - ELEC 151 Homework 6 solution(1 The content of a...

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