逻辑电路如题14图所示，其输出函数表达式为（）https://assets.asklib.com/images/image2/2018071014543457520.jpg

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 .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 .https://assets.asklib.com/psource/2015110210031265788.jpg B .https://assets.asklib.com/psource/2015110210032979940.jpg C .https://assets.asklib.com/psource/2015110210034421002.jpg D .https://assets.asklib.com/psource/2015110210035895254.jpg

A . 四进制减法计算器 B . 四进制加法计算器 C . 三进制减法计算器 D . 三进制加法计算器

A . 0 B . 1100 C . 1645 D . 4400

A .https://assets.asklib.com/psource/2015110209310281938.jpg B .https://assets.asklib.com/psource/2015110209311663126.jpg C .https://assets.asklib.com/psource/2015110209312956463.jpg D .https://assets.asklib.com/psource/2015110209314416183.jpg

A . 四进制减法计算器 B . 四进制加法计算器 C . 八进制减法计算器 D . 八进制加法计算器

A．<img src='https://img2.soutiyun.com/latex/latex.action' /> B．<img src='https://img2.soutiyun.com/latex/latex.action' /> C．110V D．220V <img src='https://img2.soutiyun.com/ask/5451001-5454000/d42e728a39bc016169f4ef76bc68bf63.jpg' />

若某电路的幅频特性如题3-6图所示，试写出<img src='https://img2.soutiyun.com/ask/2019-05-09/92628407121709.png' />的表达式，并近似估算该电路的上限频率。<img src='https://img2.soutiyun.com/ask/2019-05-09/926284101592422.png' />

<img src='https://img2.soutiyun.com/ask/2020-10-07/970922848041832.png' />

对于 如题3-6图所示的三角波信号，试证明其频谱函数为<img src='https://img2.soutiyun.com/ask/2020-07-10/963220577029868.png' />。 <img src='https://img2.soutiyun.com/ask/2020-07-10/963220592031727.png' />

<img src='https://img2.soutiyun.com/shangxueba/ask/17862001-17865000/17862233/2015110209254329436.jpg' /> A．<img src='https://img2.soutiyun.com/shangxueba/ask/17862001-17865000/17862233/2015110209260250234.jpg' /> B．<img src='https://img2.soutiyun.com/shangxueba/ask/17862001-17865000/17862233/2015110209262636595.jpg' /> C．<img src='https://img2.soutiyun.com/shangxueba/ask/17862001-17865000/17862233/201511020926411982.jpg' /> D．<img src='https://img2.soutiyun.com/shangxueba/ask/17862001-17865000/17862233/2015110209265736798.jpg' />

<img src='https://img2.soutiyun.com/shangxueba/ask/17865001-17868000/17866529/2015110210021760004.jpg' /> A．四进制减法计算器 B． 四进制加法计算器 C． 八进制减法计算器 D． 八进制加法计算器

<img src='https://img2.soutiyun.com/shangxueba/ask/17868001-17871000/17870043/2015110210025158108.jpg' /> A．<img src='https://img2.soutiyun.com/shangxueba/ask/17868001-17871000/17870043/2015110210031265788.jpg' /> B．<img src='https://img2.soutiyun.com/shangxueba/ask/17868001-17871000/17870043/2015110210032979940.jpg' /> C．<img src='https://img2.soutiyun.com/shangxueba/ask/17868001-17871000/17870043/2015110210034421002.jpg' /> D．<img src='https://img2.soutiyun.com/shangxueba/ask/17868001-17871000/17870043/2015110210035895254.jpg' />

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' />

<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/ask/2021-01-07/978883590326199.png' />

A．0.375A B．0.25A C．0.125A D．0.1875A

已知电路如题7-11图所示.输入电压为u_i(t)=(10sin200t+10sin400t+10sin800t)V若要使输出电压u₀(t)中仅包含角频率为200rad/s的谐波分量,问L、C应取何值？ <img src='https://img2.soutiyun.com/ask/2020-10-10/971183075841306.jpg' />

<img src='https://img2.soutiyun.com/ask/2021-01-22/980192802617851.png' />