题33图所示组合电路的输出F的函数表达式应为（）。

A . A.化简函数表达式 B . B.列出真值表 C . C.说明给定电路的基本功能 D . D.根据最简输出函数表达式画出逻辑图

A . 1 B . 0.5 C . 2 D . 0.25

A . F=B B . F=1 C . F=A D . F=0

A . A.1、2、3、4 B . B.4、3、2、1 C . C.4、2、3、1 D . D.4、1、2、3

A .https://assets.asklib.com/psource/2015110209260250234.jpg B .https://assets.asklib.com/psource/2015110209262636595.jpg C .https://assets.asklib.com/psource/201511020926411982.jpg D .https://assets.asklib.com/psource/2015110209265736798.jpg

A . 奇偶校验 B . 与非 C . 与或非 D . 异或非

A . 2.5 B . 1.25 C . 5 D . 10

<img src='https://img2.soutiyun.com/shangxueba/ask/17874001-17877000/17875143/2015110209075654816.jpg' /> A．15 B． 10 C． 7 D． 12

写出题1-5图所示各电路的U=f(I)和I=f(U)两种形式的端口特性方程. <img src='https://img2.soutiyun.com/ask/2020-10-09/971091757119769.png' />

A．F=∑m(0，4，5，7，8，12，13，14，15) B．F=∑m(1，2，3，6，9，10，11) C．F=∑m(0，8，12，14，15) D．F=AB+BD+<img src='https://img2.soutiyun.com/latex/latex.action' />

题7.4图所示为带阻电路，负载端为开路，求其电压比函数<img src='https://img2.soutiyun.com/latex/latex.action' />及其零、极点。 <img src='https://img2.soutiyun.com/ask/5514001-5517000/f6236ac9bcb2541be1e40f07ac074ef5.jpg' />

<img src='https://img2.soutiyun.com/ask/uploadfile/5469001-5472000/728fa2f4a937a6b22cd60a27fad220cf.png' />

<img src='https://img2.soutiyun.com/ask/uploadfile/5406001-5409000/213596bde08d2d5a645daa1e71e4ac3a.png' />

写出如图2.14(a)~(d)所示各电路输出逻辑函数表达式.设电路中各元件的参数满足使晶体管处于饱和及截止的条件. <img src='https://img2.soutiyun.com/ask/2021-01-21/980088391011023.png' />

<img src='https://img2.soutiyun.com/ask/2020-08-19/966716598259878.png' />

<img src='https://img2.soutiyun.com/shangxueba/ask/17862001-17865000/17862675/2015110209233257635.jpg' /> A．R1=2R2 B． R2=2R1 C． R2≥2R1 D． R2≤2R1

<img src='https://img2.soutiyun.com/shangxueba/ask/17868001-17871000/17868863/2015110209404832241.jpg' /> A．1 B． -1 C． 2 D． -2

<img src='https://img2.soutiyun.com/shangxueba/ask/17868001-17871000/17868888/2015110209513078451.jpg' /> A．0.25 B． 0.5 C． 2 D． 4

<img src='https://img2.soutiyun.com/ask/2021-01-07/978883590326199.png' />

<img src='https://img2.soutiyun.com/ask/2021-01-31/980936844000108.png' />

试写出题3-4-2图所示图形的时间函数表达式f(t). <img src='https://img2.soutiyun.com/ask/2020-10-09/971112116188241.png' /><img src='https://img2.soutiyun.com/ask/2020-10-09/971112124441713.png' /> <img src='https://img2.soutiyun.com/ask/2020-10-09/971112136616409.png' />