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1、电工与电子技术基础复习资料绘图化简题（Fundamentals of electrical and electronic technology review data drawing simplified problem）This article is contributed by yyyy66a Pdf documents may experience poor browsing on the WAP side. It is recommended that you first select TXT, or download the source file to the local view
2、. Review of the fundamentals of electrical and electronic technology The ninth chapter is the sequential logic circuit 1. assume that the initial state of the flip flops shown in each diagram is 0, and try to draw the waveform at the Q end under the action of the CP pulse. Answer: 2. assume that the
3、 initial state of the flip flops shown in each diagram is 0, and try to draw the waveform at the Q end under the action of the CP pulse. Answer: 3. assume that the initial state of each TTL flip-flop is 0 as shown in the following diagram, and try to draw the waveform at the Q end under the action o
4、f the CP pulse. 精品资料 - - - 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 1 页，共 25 页 - - - - - - - - - - Answer: 4. assume that the initial state of each TTL flip-flop is 0 as shown in the following diagram, and try to draw the waveform at the Q end under the action of the CP pulse. Answe
5、r: 5. assume that the initial state of each TTL flip-flop is 0 as shown in the following diagram, and try to draw the waveform at the Q end under the action of the CP pulse. Answer: 6. assume that the initial state of each TTL flip-flop is 0 as shown in the following diagram, and try to draw the wav
6、eform at the Q end under the action of the CP pulse. Answer: 7., known TTL master-slave JK flip-flop, input J, K, timely pulse, CP waveform, shown in figure. Please draw the corresponding waveform of the output Q. Set the initial trigger 0. Answer: 8., known TTL master-slave KJ flip-flop, input J, K
7、, timely pulse, CP waveform, shown in figure. Please draw the corresponding waveform of the output Q. Set the initial trigger 0. 精品资料 - - - 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 2 页，共 25 页 - - - - - - - - - - Answer: 9., a known (TTL) JK trigger input, J, K, timely pulse, CP wave
8、form shown in the figure. Please draw the corresponding waveform of the output Q. Set the initial trigger 0. Answer: 10., a known (TTL) JK trigger input, J, K, timely pulse, CP waveform shown in the figure. Please draw the corresponding waveform of the output Q. Set the initial trigger 0. Answer: 11
9、. draw the waveform of the Q flip flops at the D flip flops as shown in figure (a). The known input waveform is shown in figure (B). The initial 0 Q end. Answer: 12. draw the waveform of the Q flip flops at the D flip flops as shown in figure (a). The known input waveform is shown in figure (B). The
10、 initial 0 Q end. Answer: The output waveform of 13. counter circuit and at all levels of the delta known as shown below, please note: 1, the counter is still along the leading edge trigger trigger? 2, synchronous or asynchronous counting circuit. 3, is a few count circuit? 精品资料 - - - 欢迎下载 - - - - -
11、 - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 3 页，共 25 页 - - - - - - - - - - Answer: 1, the counter is the front edge trigger; 2, it is an asynchronous counter; 3, it is a four binary or two bit binary counter. As shown in figure 14. the circuit is composed of counter D flip-flop, explain its function
12、; and draw the corresponding output waveform with CP pulse. (set initial state to 000) Answer: this circuit is: three bit binary (or one octal) asynchronous addition counter, its waveform is as follows. As shown in figure 16. the circuit is composed of counter D flip-flop, explain its function; and
13、draw the corresponding output waveform with CP pulse. (set initial state to 000) Answer: this circuit is: three bit binary (or one octal) asynchronous subtraction counter, its waveform is as follows. As shown in figure 17. the circuit is composed of counter D flip-flop, explain its function; and dra
14、w the corresponding output waveform with CP pulse. (set initial state to 000) Answer: this circuit is: three bit binary (or one octal) asynchronous subtraction counter, its waveform is as follows. As shown in figure 18. the circuit is composed of counter D flip-flop, explain its function; and draw t
15、he corresponding output waveform with CP pulse. (set initial state to 000) 精品资料 - - - 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 4 页，共 25 页 - - - - - - - - - - Answer: this circuit is: three bit binary (or one octal) asynchronous addition counter, its waveform is as follows. As shown
16、in figure 19. the circuit is composed of counter JK flip-flop, explain its function; and draw the corresponding output waveform with CP pulse. (set initial state to 000) Answer: this circuit is: three bit binary (or one octal) asynchronous subtraction counter, its waveform is as follows. As shown in
17、 figure 20. the circuit is composed of counter JK flip-flop, explain its function; and draw the corresponding output waveform with CP pulse. (set initial state to 000) Answer: this circuit is: three bit binary (or one octal) asynchronous addition counter, its waveform is as follows. As shown in figu
18、re 21. the circuit is composed of counter JK flip-flop, explain its function; and draw the corresponding output waveform with CP pulse. (set initial state to 000) Answer: this circuit is: three bit binary (or one octal) asynchronous addition counter, its waveform is as follows. As shown in figure 22
19、. the circuit is composed of counter JK flip-flop, explain its function; and draw the corresponding output waveform with CP pulse. (set initial state to 000) Answer: this circuit is: three bit binary (or one octal) asynchronous subtraction counter, its waveform is as follows. 精品资料 - - - 欢迎下载 - - - -
20、 - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 5 页，共 25 页 - - - - - - - - - - The 23. circuit by TTL trigger is shown in Figure 1: the logic function of circuit; the draw waveform of Q0 and Q1 (set the initial state for 00). Answer: by the circuit can know, J0=Q1, J1=, Q0, can draw the Q0, Q1 wavefor
21、m, as shown. This circuit is a synchronous three decimal unit. The 24. circuit by TTL trigger is shown in Figure 1: the logic function of circuit; the draw waveform of Q0 and Q1 (set the initial state for 00). Answer: As can be seen by the circuit, J0=Q1, J1=, Q0, you can draw Q0, Q1 waveform, as sh
22、own. This circuit is a synchronous three decimal unit. The circuit and the input signal as shown in figure 25. by the waveform consisting of TTL triggers, draw the waveform of Q0 and Q1. (set the initial state of each flip-flop to 0) Answer: The circuit and the input signal as shown in figure 26. by
23、 the waveform consisting of TTL triggers, draw the waveform of Q0 and Q1. (set the initial state of each flip-flop to 0) Answer: Twenty-seven 精品资料 - - - 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 6 页，共 25 页 - - - - - - - - - - The circuit and the input signal waveform as shown by the
24、TTL flip flops, draw the waveform of Q0 and Q1. (set the initial state of each flip-flop to 0) Answer: The circuit and the input signal as shown in figure 28. by the waveform consisting of TTL triggers, draw the waveform of Q0 and Q1. (set the initial state of each flip-flop to 0) Answer: Eighth cha
25、pters Combinational logic circuit 1. combinational logic circuits, as shown, try to write logical expressions and simplify them. List the state truth table of the circuit. Answer: Y = A, B, B = C = A, B + B, C A 01010101 B 00110011 精品资料 - - - 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第
26、 7 页，共 25 页 - - - - - - - - - - C 00001111 Y 00010011 2. combinational logic circuits, as shown, try to write logical expressions and simplify them. List the state truth table of the circuit. Answer: Y = A + B + A.B A 0101 B 0011 Y 1001 3. combinational logic circuits, as shown, try to write logical
27、 expressions and simplify them. List the state truth table of the circuit. 精品资料 - - - 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 8 页，共 25 页 - - - - - - - - - - Answer: Y = A? B + A? B A 1014 combinational logic circuits, as shown, try to write logical expressions. B 0011 Y 0110 Answer
28、: Y = A? B? C.D.E? 5. combinational logic circuits, as shown, try to write logical expressions and simplify them. List the state truth table of the circuit. Answer: Y = A, B, A, B, C, B, C = A, A, B, C + A, B, C, B, C = A, B, C, A (A + B, C) C 精品资料 - - - 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - -
29、- - - - - -第 9 页，共 25 页 - - - - - - - - - - A 01010101 B 00110011 C 00001111 Y 01010110 6. combinational logic circuits, as shown, try to write logical expressions and simplify them. List the state truth table of the circuit. Answer: Y = A, A, B, B, A = A, A, B + B, A = B = A, B = + B (A + B) A 0101
30、 B 0011 精品资料 - - - 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 10 页，共 25 页 - - - - - - - - - - Y 0110 7. combinational logic circuits, as shown, try to write logical expressions and simplify them. List the state truth table of the circuit. Answer: Y = A, B, B = C = A, B + B, C A 010101
31、01 B 00110011 C 00001111 Y 00010011 8. combinational logic circuits, as shown, try to write logical expressions and simplify them. List the state truth table of 精品资料 - - - 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 11 页，共 25 页 - - - - - - - - - - the circuit. Answer: Y = A +, B +, B +
32、, C = (A + B) + (B + C) A 010 B 001 C 000 Y 001 10101 10011 01111 10111 9. combinational logic circuits, as shown, try to write logical 精品资料 - - - 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 12 页，共 25 页 - - - - - - - - - - expressions, Merge and simplify. List the state truth table of
33、the circuit. Answer: Y = A+, B = A+, B+, B+C = A+, B+C, B+C A 01010101 B 00110011 C 00001111 Y 01111111 10. combinational logic circuits, as shown, try to write logical expressions and simplify them. List the state truth table of the circuit. Answer: Y = A, B + B = C = A = B = B = C = ABC 精品资料 - - -
34、 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 13 页，共 25 页 - - - - - - - - - - A Zero B Zero C Zero Y Zero 1010101 0110011 0001111 0000001 11. combinational logic circuits, as shown, try to write logical expressions and simplify them. List the state truth table of the circuit. Answer: 精品
35、资料 - - - 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 14 页，共 25 页 - - - - - - - - - - Y = A? B + B? C A 01010101 B 00110011 C 00001111 Y 00010011 12. combinational logic circuits, as shown, try to write logical expressions and simplify them. List the state truth table of the circuit. An
36、swer: Y = (A + B)? (B + C) A 01 B 精品资料 - - - 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 15 页，共 25 页 - - - - - - - - - - 00 C 00 Y 00 010101 110011 001111 110111 13. combinational logic circuits, as shown, try to write logical expressions and simplify them. List the state truth table o
37、f the circuit. Answer: Y = A+, B+, B+C = A+, B+C A 01010101 精品资料 - - - 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 16 页，共 25 页 - - - - - - - - - - B 00110011 C 00001111 Y 01111111 14. combinational logic circuits, as shown, try to write logical expressions and simplify them. List the s
38、tate truth table of the circuit. Answer: Y = A, B = B = C = A = B? C A 0101 B 0011 C 0000 精品资料 - - - 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 17 页，共 25 页 - - - - - - - - - - Y 0000 0101 0011 1111 0001 15. combinational logic circuits, as shown, try to write logical expressions and s
39、implify them. List the state truth table of the circuit. Answer: Y = C, B, A, C, A, B, C = A, C, B + A, B, C +, A, B, C = A, A = B, C + A, B A 01010101 B 00110011 C 精品资料 - - - 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 18 页，共 25 页 - - - - - - - - - - 00001111 Y 00010101 16. combinatio
40、nal logic circuits, as shown, try to write logical expressions and simplify them. List the state truth table of the circuit. Answer: Y = A +, B +, A +, B = (A +, B), (A + B) = A A Zero B Zero Y Zero 101 011 精品资料 - - - 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 19 页，共 25 页 - - - - - -
41、- - - - 101 17. combinational logic circuits, as shown, try to write logical expressions and simplify them. List the state truth table of the circuit. 答案: y =? b? the? b = (? (b) + (a? (b) = a the 1 0 1 0 b 0 0 0 0 1 1 1 1 y 1 0 1 0 18. 组合逻辑电路如图所示 , 试写出逻辑表达式 , 并化简 . 列出电路的状态真值表 . 答案: y = a + b? a + b
42、 = (a + b) + (a + b) = 1, the 精品资料 - - - 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 20 页，共 25 页 - - - - - - - - - - 1 0 1 0 b 0 0 0 0 1 1 1 1 y 1 1 1 1 1 1 1 1 19. 组合逻辑电路如图所示 , 试写出逻辑表达式 , 并化简 . 列出电路的状态真值表 . 答案: y =? b? a + b = (? (b) + (a + b) = a + b the 1 0 1 0 b 0 0 0 0 1 1 1 1 y 1
43、 1 1 1 0 1 20. 组合逻辑电路如图所示 , 试写出逻辑表达式 , 并化简 . 列出电路的状态真值表 . 精品资料 - - - 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 21 页，共 25 页 - - - - - - - - - - 答案: y =? b + a + b = (? (b)? (a + b) =? the? the b +? b? b =? b the 1 0 1 0 b 0 0 0 0 1 1 1 1 y 0 0 0 0 0 1 21. 组合逻辑电路如图所示 , 试写出逻辑表达式 , 并化简 .
44、 列出电路的状态真值表 . 答案: y = a + b + a + b + a + b = (a + b). (a + b). (a + b) =? b the 1 0 1 0 b 0 0 0 0 1 1 1 1 精品资料 - - - 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 22 页，共 25 页 - - - - - - - - - - y 0 0 0 0 0 1 22. 组合逻辑电路如图所示 , 试写出逻辑表达式 , 并化简 . 列出电路的状态真值表 . 答案: y = a + b? a + b? a + b = (
45、a + b) + (a + b) + (a + b) = 1, the 1 0 1 0 b 0 0 0 0 1 1 1 1 y 1 1 1 1 1 1 1 1 23.应用逻辑代数运算法则推证下列各式: (1) the abc + a + b + c = 1 (2) (b + ab + b = a + b 答案: (1) 设 x = a + b + c = 则原式 abc + abc + x = x = a + b + c + x = x + (x = 1, 2 the 原式) = ab + b + b + b = (a + b + (b) + (b) = a + b 24.化简下列逻辑表达式
46、. (1), y = (a + b) + ab (2), y = (ab + b + ab), (a + b + d the 、 (b + d) 精品资料 - - - 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 23 页，共 25 页 - - - - - - - - - - 答案: (1), y = (a + b). ab = (a + b) (a + b) = b + ab = b (2), y = (a (b + ab + b), (b), (d + b (d) = (a + ab) = a + b 25.化简下列逻辑
47、表达式 . (1) y = (ab the b + ab) + (a + (b + d + 答案 abd): (1), y = (a (b + ab), (b) + (a + b + d + a + (b + d) = a + ab = a + b (2), y = a + b + + abc c + d = abc abc + + d = d 26.化简下列逻辑表达式 . (1) Y = AB (BC + AD + C) answer: (1) Y = AB (BC + AD) C = ABBC + ABA + D + C = C (2) Y = AB + A B + AB + AB + C
48、 = C 27. simplify the following logical expression. (1) Y = ABC + ABD + BC D + ABC + BD + BCD (2) Y = ABC + A + B + D answer: (1) (2) Y = AB + A B + AB + AB + C (2) Y = ABC + C + A + D + B + C + D + Y = ABC, D +, ABD +, BC, D +, ABC +, BD +, BCD = ABC +, BD +, BC = BC + BD (2) Y = ABC +, A +, B +, C +, D = ABC +, ABC +, D = D One 精品资料 - - - 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 24 页，共 25 页 - - - - - - - - - - 文档编码：KDHSIBDSUFVBSUDHSIDHSIBF-SDSD587FCDCVDCJUH 欢迎下载 精美文档欢迎下载 精品资料 - - - 欢迎下载 - - - - - - - - - - - 欢迎下载 名师归纳 - - - - - - - - - -第 25 页，共 25 页 - - - - - - - - - -