SP10-hw5-sol

SP10-hw5-sol - UNIVERSITY OF CALIFORNIADAVIS DEPARTMENT OF...

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UC Davis 1 Hussain Al-Asaad U NIVERSITY OF C ALIFORNIA —D AVIS D EPARTMENT OF E LECTRICAL & C OMPUTER E NGINEERING EEC180A—D IGITAL S YSTEMS I Spring 20 10 P ROBLEM S ET 5—S OLUTION 1. P ROBLEM 7.9 To construct two digit BCD counter, we connect the signal R from the first BCD counter to the enable line of the second BCD counter. So, the second BCD counter will increment after the first counter rolls from 9 to 0. The design can be easily expanded to more than two-digit BCD counters. Clk P T CLR LD QD QB QC QA D B C A RCO 163 1 BCD Digit { 1-Digit BCD Counter R E 1 Clk P T CLR LD QD QB QC QA D B C A RCO 163 1 Least significant BCD Digit R E 1 Clk P T CLR LD QD QB QC QA D B C A RCO 163 1 Most significant BCD Digit R E 2-Digit BCD Counter
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UC Davis 2 Hussain Al-Asaad 2. C OUNTER D ESIGN Design a counter that counts in the following sequence: 010, 011, 100, 101, and repeat. Use JK flip-flops in your implementation. 3. P ROBLEM 7.20 The next state equations for S1 and S0 are derived as follows: The state transition table and the state diagram of the counter can be determined as shown below. Assume that we
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SP10-hw5-sol - UNIVERSITY OF CALIFORNIADAVIS DEPARTMENT OF...

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