2000 年上海同济大学数字电子技术考研真题
一.给出你所知的门电路类型,画出它们的逻辑符号,说明输出与输入的逻辑关系、并写出
表达式。
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二.写出几种常用触发器的特性方程、画出时序图。不同触发器之间如何转换,请给出若干
实例。
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三.CMOS 数字集成电路与 TTL 数字集成电路各有何优点与 特点,为什么?请详细说明。
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四.脉冲数字电路中常用的 RC 电路有哪些,请分别画出电路图、说明特点及用途。若输入
信号为一方波、分别画出它 们的输出波形。
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五、 请化简下列函数∶
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六.用七个开关(K.=L.7)控制一个电灯,当 K1、K3、K5 和 K7 闭合且 K2 断开,或 K2、K4、和
K6 闭合且 K3 断开 时,灯亮。用门电路设计此控制线路。
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七.设计一信号检测器。当输入出现"101"序列时输出为 1,其它情况输出均为 0。
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