试分析图3-3-5电路的逻辑功能。

A . 正确 B . 错误

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 . A、单一的组合逻辑电路 B . B、单一的时序逻辑电路 C . C、一个数字系 D . D、独立器件

A . A、卡诺图 B . B、真值表 C . C、方程式 D . D、逻辑图

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TTL逻辑电路组成的同步时序电路如图11-66所示。(1)试分析图中虚线框内电路，画出Q1、Q2、Q3波形，并说明虚线框内电路的逻辑功能。(2)若把电路中的Z输出和各触发器的置零端CR连接在一起，试说叨当X1X2X3为110时，整个电路的逻辑功能是什么？ <img src='https://img2.soutiyun.com/ask/2020-07-22/964284879679792.png' />

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由JK触发器和PLA构成的时序逻辑电路如图所示，试分析其功能(写出驱动方程和状态方程，画出状态转换图，说明电路的逻辑功能，电路能否自启动)。<img src='https://img2.soutiyun.com/ask/uploadfile/5478001-5481000/f152390292d2c215d853de1858c0ae2b.png' />

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试分析图L4-9(a)所示由串行进位加法器74LS183所构成的逻辑电路的功能。 <img src='https://img2.soutiyun.com/ask/uploadfile/5475001-5478000/68414a05c71b02532fe4876ae3d04c86.png' />

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