计算机逻辑结构体系,计算机系统第4章 处理器体系结构-L2-逻辑设计.pdf

School of Computer Science and Technology, HIT

第四章 处理器体系结构

——逻辑设计

教 师：吴锐

计算机科学与技术学院

哈尔滨工业大学

Bryant andBryant andBryant and O’HallaronO’HallaronO’Hallaron, Computer Systems: A Programmer’s Perspective, Third Edition, Computer Systems: A Programmer’s Perspective, Third Edition, Computer Systems: A Programmer’s Perspective, Third Edition 1

School of Computer Science and Technology, HIT

逻辑设计概述

 基本的硬件需求

 通讯

 如何将值从一个地方移动到另外一个地方

 计算

 存储

 比特是我们的朋友

 全部用0和1表示

 通讯

 电线上的低或高电压

 计算

 计算布尔函数

 存储

 存储信息位

Bryant andBryant andBryant and O’HallaronO’HallaronO’Hallaron, Computer Systems: A Programmer’s Perspective, Third Edition, Computer Systems: A Programmer’s Perspective, Third Edition, Computer Systems: A Programmer’s Perspective, Third Edition 2

School of Computer Science and Technology, HIT

数字信号

0 1 0

电压

时间

 用电压阈值从连续信号中提取离散值

 最简单版本：1位信号

 或者是高位，或者是低位

 在高位和低位之间有保护范

 不会收到噪音或者低质量的电路因素影响

 可以使得电路简单、规模小、速度快

Bryant andBryant andBryant and O’HallaronO’HallaronO’Hallaron, Computer Systems: A Programmer’s Perspective, Third Edition, Computer Systems: A Programmer’s Perspective, Third Edition, Computer Systems: A Programmer’s Perspective, Third Edition 3

School of Computer Science and Technology, HIT

通过逻辑门进行计算

And Or