• 2022-05-30
    求题图4.2所示电路中[tex=0.643x1.0]J+LW/0i6Fe+lWEmBUgT8zg==[/tex]的逻辑表达式,化简成最简与或式,列出真值表,分析其逻辑功能,设计出全部改用与非门实现这一逻辑功能的电路。[br][/br][img=417x228]17ad22a3e9a7484.png[/img]
  • 解:在图中标出各级输出变量,有[br][/br][img=437x246]17ad22a745e7199.png[/img][br][/br][tex=27.286x5.071]a0s3MH7cLIdmiBRR0YN067DsFx9hThozWek/eyAki0MY/AeYPyN7VSMOQlofNSKxfld+SZLxR5HxZmBGiewo4y7IkdbevXJjmwZJxGK8xtivF0h8fI4xs5QuwxcOJYZiXT202PhuhDXBwK6VqA2ddI/g+6u1N8fOSAxIULLfCxpG8SQEk6QfnsxS5v5S2ySm2jU6+JJoa7skjPDV8PGPD+1aHg8DHZSLg0qkzMj0gW4rtCfL21i5L0srctPGjiH67WSyOeJEWOiYL/94kPVPe2vLl2EQcaFNvDZTWLA5WFJQSMjjXXwIkSK/Aw8QEkNxZhOXyRE7INK2dHMasYS7V69ZPDxPbXU3DPcPtAUMSA4SeUu/V57oEaSIsyWVt/4tlmiA/G0I0uS3qK6oQl8D7jipKEP9GnArTh/MQtstp2umjG/1u+ciwfGWd/0JLZyx7rfV+pdiBH6sv46Yg5RV7yG0inBo2ehVHbeDG04lEGs=[/tex][br][/br]真值表如下:[br][/br][tex=6.929x10.5]tOuhNvizKyRZPn+XCdGxLxTStU6WBRrTtZe5d/kgyUNUzP8i6dXt5NKSLcFOT4c5oGY5n+1dHtpH0eMpnPApAcw0IRQiTXAvUrqqhtHHAv71SNurzimju1BT66GMg6T/gIKmogXRL7w77Sc9sNDYsHrKO4XySLciy8wEVMUlJNhAa52OQvvRN60//VDYdFKRj7tYXwTtsfKgXH8/kNHCNId1qy87rSeG1otQxoMBA2BLABSDctYUkNOWhcrpZzCTWlFzzTKgCroXtOIm2KPP8w==[/tex][br][/br]显然,此电路可实现三人一致功能。[br][/br][tex=14.786x1.714]JGucZXZHGJfOAorYbOBf9N41JpKp91EbrWNNcRJRv6RhaO5l+upAChUxFblKpGNw25ZfupI4VvDXoPJth9I2QiBn5aZxLy8Mu0ACyFE1njeswBhxPWDBAABlUThk/u4J5Htr6NcWXFv1X9qKNXmWxZ9ZGGffLdrI+VRexDfqzpp9JocLjbqw0tDuFy+nCkSA[/tex][br][/br]所以,其与非门逻辑电路如下[br][/br][img=259x169]17ad22d84f7b342.png[/img]

    内容

    • 0

      分析图P3.1所示电路的逻辑功能,写出输出逻辑表达式,列出真值表,说明电路完成何种逻辑功能。[br][/br][img=516x321]17ad28f0857d5b5.png[/img]

    • 1

      写出图所示电路[tex=1.0x1.214]7kRB8X8AY3D3oQAziuBRmQ==[/tex]和[tex=1.0x1.214]kYDQcKtyXYrYSa8iK0uqZw==[/tex]的逻辑表达式,列出真值表,并说明其逻辑功能。[img=343x231]17ae22f6cc4d9cb.png[/img][br][/br][img=260x246]17ae235cc161eec.png[/img]

    • 2

      分析题图[tex=1.786x1.143]chc3P9SinegcwulpnrAOqA==[/tex]所示电路, 要求: 写出 [tex=4.357x1.286]eYHngwtG2tdVnlWInGPjzlFLWHdai+9fi/Hzeib9xYQ=[/tex]的逻辑表达式, 列出真值表,并总结电路功能。[img=309x268]17ad188658e540c.png[/img]

    • 3

      分析图P3.3所示电路的逻辑功能,写出输出[tex=1.071x1.286]ZsHT0ZttLnN+BV9m0T4ItQ==[/tex]和[tex=1.071x1.286]OMH78NNo9OvWl/6QFX7yFg==[/tex]的逻辑表达式,列出真值表,说明电路完成什么逻辑功能。[img=517x427]17d2d8918cffee1.png[/img]

    • 4

      分析题图所示的逻辑电路,写出逻辑表达式,化简、判断其逻辑功能并用与非门实现。[img=181x118]17cf8ac61738197.png[/img]