Situation Dialogue 1.2

Output devices 输出设备
• Output devices are devices for data or instructions output.
彩色显示器
真彩液晶显示器
激光打印机
喷墨式打印机
电矩阵打印机
扬声器
绘图机 投影仪
2. Exercises 练习
• • • • • • • • • • • • • Can you recognize the following computer hardwares? mouse keyboard joystick scanner micorphone microprocessors memory units chips and circuitry monitor printer speaker projector
standard ['stæ nd əd ] adj. following a particular standard set, for example, by an industry （符合）标准的；按一定规格制作 letter ['letə] n. written symbols which represent one of the sounds in a language 字母 punctuation mark [ˌp ʌŋktʃu:ˈeɪʃən, mɑ:k] n. a symbol such as a full stop or period, comma, or question mark that you use to divide written words into sentences and clauses 标点符号 character [ˈkæ rəktə(r)] n. a letter, number, or other symbol that is written or printed 字符;字节 type [taɪp ] v. to write sth using a computer or typewriter （用计算机或打字机）打字
Stone: I see. What are the keyboard and the mouse for? Jamie: Both the keyboard and the mouse are the devices for data or instructions input. A standard keyboard has more than 70 keys including letters, numbers, punctuation marks and some special characters as well. You can press these keys to input data or your instructions into the computer.
icon ['aɪkɒn] n. picture on a computer screen representing a particular computer function. If you want to use it, you move the cursor onto the icon using a mouse (电脑屏幕上可用鼠标点击的) 图标 link [lɪŋk] n. a connection between different documents, or between different parts of the same document, using hypertext 链接 appear [ə'pɪə] v. to give the impression of being or doing sth 显得；看来；似乎 contain [kənˈteɪn] v. to have or hold (someone or something) within 包含 microprocessor [ˌmaɪkrəʊˈprəʊsesə(r)] n. the main microchip for data execution 微处理器
Chapter 1
Situation Dialogue 1.2 ---Basic Computer Parts （Illustrations and Exercises）
Dialogue 1.2 Basic Computer Parts
Stone: I understand that a computer consists of three main parts: a keyboard, a monitor and the computer unit itself. Jamie: And a computer does three types of work: input, processing and output. Stone: How is the work carried out by a computer? Jamie: The work is done by hardware which performs the instructions that you inputted into t& Expressions
input [ˈɪnpʊt] n. the action of putting something into something else 输入 v. to put (data) into a computer 将(数据)输入计算机 output [ˈaʊtpʊt] n. information produced from a computer (信息的)输出 v. to supply (information, results etc) 输出(信息、结果等) carry out [ˈkæ ri, aut] v. to put in effect; to implement; to execute 执行；实施 program [ˈprəʊgræ m] n. a set of instructions that a computer follows to perform a particular task 程序
Stone: What are the functions of microprocessors, chips and circuitry? Jamie: The task of the microprocessors, chips and circuitry is to process information and carry out your instructions. Stone: What about the monitor? Jamie: The monitor is of course for images and information display. It’s the output device of a computer. Look, the printer attached to the computer is also an output device, simply by a single click on the “print” icon on the screen, it can print paper copies of whatever data stored in your computer.
Comprehension questions
• • • • • • 1. What are the main functions of a computer? 2. What is the function of a keyboard? 3. What does a computer unit contain? 4. What is the function of a monitor? 5. What is the function of a mouse? 6. What’s the functions of microprocessors, chips and circuitry? • 7. What three types of work does a computer do?
扫描仪
控制杆 麦克风 Writing Pad 手写板
Processing units 处理器
• The task of the Processing units is to process information and carry out your instructions. microprocessors 微处理器 memory units 记忆元件 chips and circuitry 芯片和电路
device [dɪˈvaɪs] n. an equipment made for a particular purpose 装置；设备 keyboard [ˈki:bɔ:d] n. a panel of keys that operate a computer 键盘 mouse [maʊs] n. a small hand-held device with buttons for entering commands into a computer 鼠标 data ['deɪtə] n. information that is stored by a computer （储存在计算机中的）数据资料
memory [ˈmeməri] n. a computer part where data is stored 内存；存储器 circuitry [ˈsɜ:kɪtri] n. an electronic equipment consisting of a system of circuits 电路 operate [ˈɒpəreɪt] v. to work; to run; to be in action 工作；运转 process [ˈprəʊses] v. to perform operations on (data) according to programmed instructions for obtaining the required information 处理（信息） monitor ['mɒnɪtə] n. a screen which is used to display certain kinds of information, for example on a computer, in airports, or in television studios. 显示屏