公开课链接:http://www.chinesemooc.org/kvideo.php?do=course_progress&kvideoid=4392&classesid=1967
4.1 算术运算和逻辑运算
![](https://pphkpublicbucket.oss-cn-hongkong.aliyuncs.com/ppblog/2020/09/image-81.png?x-oss-process=style/mymark)
4.2 门电路的基本原理
![](https://pphkpublicbucket.oss-cn-hongkong.aliyuncs.com/ppblog/2020/09/image-84.png?x-oss-process=style/mymark)
- 对NMOS管,Gate端高电平时导通
- 对PMOS管,Gate端低电平时导通
- 具体原理:https://blog.csdn.net/malcolm_110/article/details/96477442#comments_12747890
![](https://pphkpublicbucket.oss-cn-hongkong.aliyuncs.com/ppblog/2020/09/image-88.png)
![](https://pphkpublicbucket.oss-cn-hongkong.aliyuncs.com/ppblog/2020/09/image-85.png?x-oss-process=style/mymark)
![](https://pphkpublicbucket.oss-cn-hongkong.aliyuncs.com/ppblog/2020/09/image-86.png?x-oss-process=style/mymark)
4.3 寄存器的基本原理
![](https://pphkpublicbucket.oss-cn-hongkong.aliyuncs.com/ppblog/2020/09/image-89.png?x-oss-process=style/mymark)
D触发器原理https://zhuanlan.zhihu.com/p/37137899
![](https://pphkpublicbucket.oss-cn-hongkong.aliyuncs.com/ppblog/2020/09/image-90.png?x-oss-process=style/mymark)
![](https://pphkpublicbucket.oss-cn-hongkong.aliyuncs.com/ppblog/2020/09/image-91.png?x-oss-process=style/mymark)
4.4 逻辑运算的实现
![](https://pphkpublicbucket.oss-cn-hongkong.aliyuncs.com/ppblog/2020/09/image-92.png?x-oss-process=style/mymark)
4.5 加法和减法的实现
![](https://pphkpublicbucket.oss-cn-hongkong.aliyuncs.com/ppblog/2020/09/image-93.png?x-oss-process=style/mymark)
![](https://pphkpublicbucket.oss-cn-hongkong.aliyuncs.com/ppblog/2020/09/image-94.png?x-oss-process=style/mymark)
![](https://pphkpublicbucket.oss-cn-hongkong.aliyuncs.com/ppblog/2020/09/image-95.png?x-oss-process=style/mymark)
![](https://pphkpublicbucket.oss-cn-hongkong.aliyuncs.com/ppblog/2020/09/image-98.png?x-oss-process=style/mymark)
![](https://pphkpublicbucket.oss-cn-hongkong.aliyuncs.com/ppblog/2020/09/image-99.png?x-oss-process=style/mymark)
![](https://pphkpublicbucket.oss-cn-hongkong.aliyuncs.com/ppblog/2020/09/image-100.png?x-oss-process=style/mymark)
![](https://pphkpublicbucket.oss-cn-hongkong.aliyuncs.com/ppblog/2020/09/image-101.png?x-oss-process=style/mymark)
相反数获取方式:按位取反,末位加1
4.6 加法器的优化
![](https://pphkpublicbucket.oss-cn-hongkong.aliyuncs.com/ppblog/2020/09/image-102.png?x-oss-process=style/mymark)
最简单的加法器
![](https://pphkpublicbucket.oss-cn-hongkong.aliyuncs.com/ppblog/2020/09/image-103.png?x-oss-process=style/mymark)
Ripple-Carry-Adder 延迟时间分析
![](https://pphkpublicbucket.oss-cn-hongkong.aliyuncs.com/ppblog/2020/09/image-104.png?x-oss-process=style/mymark)
![](https://pphkpublicbucket.oss-cn-hongkong.aliyuncs.com/ppblog/2020/09/image-105.png?x-oss-process=style/mymark)
![](https://pphkpublicbucket.oss-cn-hongkong.aliyuncs.com/ppblog/2020/09/image-106.png?x-oss-process=style/mymark)
![](https://pphkpublicbucket.oss-cn-hongkong.aliyuncs.com/ppblog/2020/09/image-107.png?x-oss-process=style/mymark)
高位的超前进位加法器(CLA)电路过于复杂,一般采取多个串联