• 2022-06-16
    用8选1数据选择器设计一个函数发生器电路,它的功能如表4-18所示。[p=align:center]表4-18[p=align:center][tex=7.714x6.786]Phk86/eYRwgtu74oKIeds7M1+c0RLJ7wzpnQ5eqwQ94a4i55eTTCwIXuWPQ+O7kkw2UJ0DVie/AFRvNcgCARct+d9vFRfkw4fTgqGTOXDKblATA0ZgCs9BMLi5SAPhKQEZawWt06Etxd/FiOVO1tdt5730rE/bFZNooyYwTsQSHPHPeYsmrvHdWtIhqHY84cI/rW5uHAky4GBOdJgrgzMQ==[/tex]
  • 解:根据电路的功能表可得:[tex=25.929x3.071]a0s3MH7cLIdmiBRR0YN066ick3Y47xQ1BVgdqIJMC6K6OP9K8WRmd+uXTTFCslKzxTmojXKwhQz2/D0Db4fLQgXQA1EBouzr/PNIHziuhlrzR6rJbvEkL4NeyJovt/v4omS2Q7/TtSiTL32hdbcTeIkZNatGlSTAqDBebiE162gs7UmLSeNM5UMJgesA1+jLypKJY2Qp70a+6jrw5Zx5AK2Vd4avx4w0OQRFsuNOsz3Lu65dLL6hswTlAR0j4pyHnuzYHawUVZjA2iKFqxwfqN9vau3nSjSc+Y1cW4rS0VRX7CWaqn+iSU+N3nle+Zd6mEw37b3pU6+Noti2k/yUf6XQNQ0ILGUgKnbGzQZpBR6suZsZXEsAOY8qua1dAun2zP7JjpTm97Zpcbdp5EtxSz2ehimrIqmDqSivEptf8zEjlh8VZq7GZ4DjuV4HN1WuS9y+6RBp8RhxsVh+sgkA4zVdM5TS2UMaNvtA/qaZAHY=[/tex]若令[tex=1.0x1.214]kyq+J42DaJ4VZog7tkCqmA==[/tex] 、[tex=1.0x1.214]EKVJWDQGib+XbcGArWe49A==[/tex]、[tex=0.786x1.0]b4HkKtHXeHofHX/gJc8Agg==[/tex]分别接 8 选 1 数据选择器的[tex=1.143x1.214]aDRAD5DQTC8UnSdJchF4lQ==[/tex]、[tex=2.5x1.214]whH1gRMEWsd7m1fkkZ5Ce/4vQXDrHsyLYTneshsb440=[/tex] 端,可将 [tex=0.643x1.0]jDVSpgNhHe+VJmgvx3gg1Q==[/tex]做如下化简 : [tex=19.786x4.643]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[/tex]            [tex=18.071x1.429]YJ2pC7+8Mjx6QZE3b5Xxvi9KhnWmJggr2TcPs11iJU6fqo8g8Ngwezyj9KcgqVtEN7QaT93i2Ty3/BdAEEC0ccYJJBJeJdGSynCnb5TAljCbAp8DdBnpolhnOcAzcpgOXSHRhBhatmSCYwToXLTF1QGOzJqFHAobsv/FTfpyWKm39YknEXDvnrLTlc9nEdPu[/tex]因此,可画出电路连接图如图 4 - 40 所示。[p=align:center][img=343x206]17a19f0dd1b6aff.png[/img]

    内容

    • 0

      set1 = {x for x in range(10)} print(set1) 以上代码的运行结果为? A: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} B: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10} C: {1, 2, 3, 4, 5, 6, 7, 8, 9} D: {1, 2, 3, 4, 5, 6, 7, 8, 9,10}

    • 1

      【单选题】请用地点定桩法在4分钟内记忆数字。 4 0 1 3 6 3 5 1 9 8 8 9 7 2 9 3 0 9 5 3 1 7 7 5 2 3 3 0 5 0 1 4 1 3 8 3 5 7 9 7 (5.0分) A. 已背 B. 未背

    • 2

      设DES加密算法中的一个S盒为: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 1 2 3 14 4 13 1 2 15 11 8 3 10 6 12 5 9 0 7 0 15 7 4 14 2 13 1 10 6 12 11 9 5 3 8 4 1 14 8 13 6 2 11 15 12 9 7 3 10 5 0 15 12 8 2 4 9 1 7 5 11 A: 1010 B: 0001 C: 1011 D: 0111

    • 3

      下面语句的输出结果是?range(len('HelloWorld')) A: [1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11] B: 11 C: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] D: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]

    • 4

      以下程序的输出结果是() main( ) { int i , x[3][3]={9 , 8 , 7 , 6 , 5 , 4 , 3 , 2 , 1} , *p=&x[1][1] ; for(i=0 ; i<4 ; i+=2) printf("%d " , p[i]) ;