电脑功能介绍英语

Five major hardware computer hardware generally refers to: the motherboard, CPU, memory, hard disk, graphics cards. These five pieces directly affect the performance of the computer.1, the main board. Motherboard is a platform for the work of the various parts of the computer, it is closely connected to the various parts of the computer together, the various components through the motherboard for data transmission. That is to say, the computer is an important transportation hub in the motherboard, the stability of its work affects the stability of the whole machine.2, CPU. CPU is the central processing unit, which is the core and the control core of a computer. Its function is mainly to explain the computer instructions and the data processing computer software. CPU consists of an arithmetic unit, a controller, a register, a cache, and the data, control, and the state of the connection between the data, the control, and the status of the bus. As the core of the whole system, CPU is the highest executive unit of the whole system, so CPU has become the core component of the computer performance, many users have to judge the grade of the computer as a standard.3, memory. Memory is also called internal memory or random access memory (RAM), divided into DDR SDRAM and SDRAM memory, but SDRAM because of low capacity, slow storage speed, poor stability, has been out of the DDR) memory belonging to the electronic storage device, which is composed of a circuit board and chip, is characterized by small size, speed, electricity can be saved, empty without electricity, that is, the computer is in the boot state memory can store data, after the shutdown will be all of the data is automatically cleared. Ram has DDR, II DDR, III DDR three categories, capacity 1-64GB.4, hard disk. Hard disk belongs to external memory, mechanical hard disk is made by the metal disk, and magnetic sheets are memory function, so storage to disk on data, whether in the boot or shutdown, all is not lost. Hard capacity is very large, has reached TB level, the size of 3.5, 2.5, 1.8, 1 inches, the interface has IDE, SATA, SCSI, SATA, the most common. Mobile hard disk is a hard disk as a storage medium, emphasizing the portability of storage products. On the market the vast majority of mobile hard disk is a standard hard drive based, and only a small part is to micro drive (1.8 Inch hard disk, etc.) as the foundation, but price factors determines the mainstream mobile hard disk or standard laptop hard drive based. Because the hard disk is used as a storage medium, the reading and writing mode of the data of the mobile hard disk is the same as the standard IDE hard disk. Mobile hard disk with USB, IEEE1394, and other fast transmission speed interface, can be high speed and system data transmission. A hard disk, composed of a control unit and a memory unit (FLASH chip), is a solid state electronic memory chip. Solid state hard disk in the product appearance and size are completely consistent with the general hard disk but the solid hard disk faster than the mechanical hard drive.5, graphics cards. Graphics at work and display with output graphics, text, the role is computer system need to display information to convert the drive, and displays to provide line scanning signal and control the display of the display correctly, is connected to the display and the personal computer motherboard important element, man-machine conversation is one of the most important equipment.电脑主机的五大硬件一般是指：主板、CPU、内存条、硬盘、显卡。这五大件直接影响电脑的性能。1、主板。主板是电脑中各个部件工作的一个平台，它把电脑的各个部件紧密连接在一起，各个部件通过主板进行数据传输。也就是说，电脑中重要的“交通枢纽”都在主板上，它工作的稳定性影响着整机工作的稳定性。2、CPU。CPU即中央处理器，是一台计算机的运算核心和控制核心。其功能主要是解释计算机指令以及处理计算机软件中的数据。CPU由运算器、控制器、寄存器、高速缓存及实现它们之间联系的数据、控制及状态的总线构成。作为整个系统的核心，CPU也是整个系统最高的执行单元，因此CPU已成为决定电脑性能的核心部件，很多用户都以它为标准来判断电脑的档次。3、内存条。内存又叫内部存储器或者是随机存储器（RAM），分为DDR内存和SDRAM内存，（但是SDRAM由于容量低，存储速度慢，稳定性差，已经被DDR淘汰了）内存属于电子式存储设备，它由电路板和芯片组成，特点是体积小，速度快，有电可存，无电清空，即电脑在开机状态时内存中可存储数据，关机后将自动清空其中的所有数据。 内存有DDR、DDR II、DDR III三大类，容量1-64GB。4、硬盘。硬盘属于外部存储器，机械硬盘由金属磁片制成，而磁片有记忆功能，所以储到磁片上的数据，不论在开机，还是关机，都不会丢失。硬盘容量很大，已达TB级，尺寸有3.5、2.5、1.8、1.0英寸等，接口有IDE、SATA、SCSI等，SATA最普遍。移动硬盘是以硬盘为存储介质，强调便携性的存储产品。市场上绝大多数的移动硬盘都是以标准硬盘为基础的，而只有很少部分的是以微型硬盘（1.8英寸硬盘等）为基础，但价格因素决定着主流移动硬盘还是以标准笔记本硬盘为基础。因为采用硬盘为存储介质，因此移动硬盘在数据的读写模式与标准IDE硬盘是相同的。移动硬盘多采用USB、IEEE1394等传输速度较快的接口，可以较高的速度与系统进行数据传输。固态硬盘用固态电子存储芯片阵列而制成的硬盘，由控制单元和存储单元（FLASH芯片）组成。固态硬盘在产品外形和尺寸上也完全与普通硬盘一致但是固态硬盘比机械硬盘速度更快。5、显卡。显卡在工作时与显示器配合输出图形、文字，作用是将计算机系统所需要的显示信息进行转换驱动，并向显示器提供行扫描信号，控制显示器的正确显示，是连接显示器和个人电脑主板的重要元件，是“人机对话”的重要设备之一。

Computer is a very useful machine. Some of them are big, but some of them are very small .Many people like playing computer. Computer has many functions, so that people can do a lot of things by computer, like watching movies, listening to the music or playing games. It can make our lives very colorful and convenient. Various people can make good use of computer. Children can use computer to learn and play games. Parents can use computers to work. I think computer is a kind of wonderful and interesting machine, so I like computer very much. 电脑是一种很有用的机器。有的电脑很大，但是有的很小。很多人喜欢玩电脑。电脑有很多功能，人们可以i用电脑做很多事情，比如说看电影，听音乐或者玩游戏。它可以使我们的生活充满色彩和便利。各种各样的人都可以好好利用电脑。小孩子可以用电脑来学习和玩游戏。父母可以用电脑来工作。我认为电脑是一种神奇有趣的机器，所以我很喜欢电脑。