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第五章 组合逻辑电路
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第五章 组合逻辑电路. 例:逻辑分析,要求列写逻辑函数 F 表达式. 要求:( 1 )各种编码器的特点( 2 )编码器与译码器的联系及区别. 要求:理解险象、竞争的产生的原因. 第五章 组合逻辑电路. 例:写出 P5.1 电路的输出 F 表达式 ( 分析). F=AB AB=ABAB+ABAB= ( A+B)AB+AB(A+B ) =AB+AB (异或非). 例: 用两片 3 线 -8 线译码器实现 4 线 -16 线译码器. (解答 〕. 例 : 教材第六章习题 21 写出 F1 , F2 的表达式.
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第五章 组合逻辑电路
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要求:(1)各种编码器的特点(2)编码器与译码器的联系及区别要求:(1)各种编码器的特点(2)编码器与译码器的联系及区别
第五章 组合逻辑电路 例:写出P5.1电路的输出F表达式(分析)
F=ABAB=ABAB+ABAB=(A+B)AB+AB(A+B) =AB+AB(异或非)
例:教材第六章习题21 写出F1,F2的表达式 Y0=CBA, Y1=CBA, …Y7=CBA; F1=Y1Y2Y4Y7=CBA+CBA+CBA+CBA
全加器 要求:掌握电路图及会列写逻辑表达式
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