家用电脑系统是家用电脑的硬设备、外围设备、系统软件和应用软件的总称。一台家用电脑系统是由硬件和软件两大部分组成的。 一、家用电脑硬件 硬件是指电脑系统设备本身,是能收集加工处理数据,并能产生输出数据的各种固定装置的总称。硬件提供了处理数据的物质基础。具体地说,家用电脑的硬件系统是由主机、输入/输出设备(显示器、键盘、打印机和鼠标器)以及外存储器(软盘驱动器和硬盘驱动器)组成,如图2.1所示。 1.主机 主机是电脑的核心,它负责存储和处理各种信息。主机是由微处理器、内存储器、输入电路、输出电路以及接口电路组成的。 微处理器 它是电脑的中央处理部件,简称CPU。它 Home computer system is a general term for home computer hardware, peripherals, system software and application software. A home computer system is composed of two major components of hardware and software. First, the home computer hardware Hardware refers to the computer system itself, is able to collect processing data, and can generate output data of a variety of fixed devices in general. Hardware provides the material basis for processing data. Specifically, a home computer’s hardware system consists of a host computer, input / output devices (monitor, keyboard, printer, and mouse) and external memory (floppy disk drive and hard disk drive) as shown in Figure 2.1. 1. Host The host is the core of the computer, which is responsible for storing and processing a variety of information. Host is a microprocessor, memory, input circuit, output circuit and interface circuit. Microprocessor It is the computer’s central processing unit, referred to as CPU. it