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1. A computer is a machine designed to perform
tasks,
计算机是被设计用来执行各种任务的机器，
2. such as mathematical calculations or electronic
communication and to store and select information
that has been fed into it.
完成诸如数学计算、电子通讯及对输入的信息进行存储和筛选等工作。
3. A computer can do a great deal of complicated
work in a very short time with reliability, accuracy,
and speed.
它能够在极短的时间内可靠、准确、迅速地 完成大量的复杂工作。
4. People use computers in a wide variety of
ways.
计算机被广泛用于各种领域。
5. In business, computers track inventories with
bar codes and scanners, check the credit status
of customers, and transfer funds electronically.
在商业中，计算机借助条码和读码器跟踪库 存、核证客户资信状况以及进行电子化资金 转移等；
6. In homes, tiny computers embedded in the electronic
circuitry of most appliances control the indoor
temperature, 在家庭中，大多数设备的电子电路中内置微 型计算机，用于控制室内温度、
7. operate home security systems, tell the time,
and turn videocassette recorders on and off.
操作家庭安全系统、报时及开关录像机等。
8. Computers in automobiles regulate the flow
of fuel, there by increasing gas mileage.
安装在汽车中的计算机可调节燃油流量，从 而提高燃油效率；
9. Computers also entertain, creating digitized
sound on stereo systems or computer-animated features
from a digitally encoded laser disc.
计算机还可用于娱乐，它可制作立体声设备 中的数字化声音或数码雷射影碟中的电脑动 画片；
10. Computers are used extensively in scientific
research to solve mathematical problems,
计算机广泛应用于科学研究：解决数学问题，
11.display complicated data, or model systems
that are too costly or impractical to build.
显示复杂数据或建立模型来模仿那些若实际 建造起来将会耗资巨大或无法实施的系统；
12. The military employs computers in sophisticated
communications to encode and unscramble messages,
and to keep track of personnel and supplies.
军队运用计算机进行复杂的通讯，对信息编 码解码，掌握人员和物资动态。
13. Computers can communicate with other computers
through a series of connections and associated
hardware called a network.
计算机可通过被称为“网络”的一系列连接及相关硬件与其他计算机通信。
14. The heart of an electronic computer lies
in the Central Processing Unit(CPU).
电子计算机的心脏是中央处理器，
15. The CPU is a microprocessor containing millions
of electrical components.
中央处理器是一个包含数百万电子元器件的微处理器。
16. It works much faster than the nerve cells
in the human brain.
它工作起来远比人类大脑的神经细胞快得 多。
17. A problem that might take a human being a
hundred years to solve can be solved by a computer
in one minute,
同一个问题若交给人处理需要100年的话，计算机在1分钟内就能完成。
18. but in order to work properly, a computer
must be given instructions--- it must be programmed.
为使计算机能正常有效的工作，必须给它以 指令——必须为其编程。
19. Computers exist in a wide range of sizes
and power.
计算机规模多样，性能各异。
20. Programmable computers vary enormously in
their computational power, speed, memory, and
physical size.
可编程计算机在性能、速度、存储能力和外观体积上差别巨大。
21. The smallest of these computers can be held
in one hand. 最小巧的计算机可握于掌中，
22.The most powerful supercomputers have many
sets of CPUs and can process extremely complex
and time-consuming calculations.
最强大的超级计算机有多个中央处理器，可处理极为复杂耗时的运算。
23. Computers will become more advanced and easier
to use. 计算机将会日益先进和易用。
24. Reliable computers can be designed for many
specialized purposes,
可靠的计算机可被设计用于多种专业用途
25. they can be used to prepare payrolls, guide
airplane flights, direct traffic, even to play
chess with world famous grand masters.
薪金发放，引导航线，指挥交通……甚至可 与世界王牌国际象棋大师对弈。
26. Computers play an essential role in modern
automation in many plants and factories throughout
the world. 计算机在全世界众多工厂和车间的现代化自 动控制中也起着关键作用
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