计算机专业英语key-term chapter 1

计算机专业英语key-term chapter 1
计算机专业英语key-term chapter 1

Key Terms -Chapter 1

application software

Also referred to as apps. Software that can perform useful work, such as word processing, cost estimating, or accounting tasks. The user primarily interacts with application software.

Blu-ray

A type of high-definition disc with a capacity of 25 to 50 gigabytes.

cloud computing

Data stored at a server on the Internet and available anywhere the Internet can be accessed.

communication device

Computer systems that communicate with other computer systems using modems. For example, it modifies computer output into a form that can be transmitted across standard telephone lines.

compact disc (CD)

Widely used optical disc format. It holds 650 MB (megabytes) to 1 GB (gigabyte) of data on one side of the CD.

computer competency

Becoming proficient in computer-related skills.

connectivity

Capability of the microcomputer to use information from the world beyond one’s desk. Data and information can be sent over telephone or cable lines and through the air so that computers can talk to each other and share information.

data

Raw, unprocessed facts that are input to a computer system that will give compiled information when the computer processes those facts. Data is also defined as facts or observations about people, places, things, and events.

database file

File containing highly structured and organized data created by database management programs.

desktop computer

Computer small enough to fit on top of or along the side of a desk and yet too big to carry around.

device driver

Every device that is connected to the computer has a special program associated with it called a device driver that allows communication between the operating system and the device.

DVD (digital versatile disc or digital video disc)

Similar to CD-ROMs except that more data can be packed into the same amount of space. DVD drives can store a typical capacity of 4.7 GB on one side.

document file

File created by a word processor to save documents such as letters, research papers, and memos.

end user

Person who uses microcomputers or has access to larger computers.

flash memory card

A solid-state storage device widely used in notebook computers. Flash memory also is used in a variety of specialized input devices to capture and transfer data to desktop computers.

general-purpose application

Application used for doing common tasks, such as browsers and word processors, spreadsheets, databases, management systems, and presentation graphics. Also known as productivity applications.

handheld computer

See personal digital assistant (PDA).

hard disk

Enclosed disk drive containing one or more metallic disks. Hard disks use magnetic charges to record data and have large storage capacities and fast retrieval times.

hardware

Equipment that includes a keyboard, monitor, printer, the computer itself, and other devices that are controlled by software programming.

information

Data that has been processed by a computer system.

information system

Collection of hardware, software, people, data, and procedures that work together to provide information essential to running an organization.

information technology (IT)

Computer and communication technologies, such as communication links to the Internet, that provide help and understanding to the end user.

input device

Piece of equipment that translates data into a form a computer can process. The most common input devices are the keyboard and the mouse.

Internet

A huge computer network available to everyone with a microcomputer and a means to connect to it. It is the actual physical network made up of wires, cables, and satellites as opposed to the Web, which is the multimedia interface to resources available on the Internet.

keyboard

Input device that looks like a typewriter keyboard but has additional keys.

laptop computer

See notebook computer and notebook system unit.

mainframe computer

This computer can process several million program instructions per second. Sizeable organizations rely on these room-size systems to handle large programs and a great deal of data.

memory

Memory is contained on chips connected to the system board and is a holding area for data instructions and information (processed data waiting to be output to secondary storage). RAM, ROM, and CMOS are three types of memory chips.

microcomputer

Small, low-cost computer designed for individual users. These include desktop, notebook, and personal digital assistant computers.

microprocessor

The central processing unit (CPU) of a microcomputer controls and manipulates data to produce information. The microprocessor is contained on a single integrated circuit chip and is the brains of the system.

midrange computer

Also known as a minicomputer.

mobile app (application)

Add-on features for a variety of mobile devices, including smartphones, netbooks, and tablets.

modem

Short for modulator-demodulator. It is a communication device that translates the electronic signals from a computer into electronic signals that can travel over telephone lines.

monitor

Output device like a television screen that displays data processed by the computer.

mouse

Device that typically rolls on the desktop and directs the cursor on the display screen.

network

The arrangement in which various communications channels are connected through two or more computers. The largest network in the world is the Internet.

notebook computer

Portable computer, also known as a laptop computer, weighing between 4 and 10 pounds.

operating system (OS)

Software that interacts between application software and the computer, handling such details as running programs, storing and processing data, and coordinating all computer resources, including attached peripheral devices. It is the most important program on the computer. Windows 7, Windows Vista, and Mac OS X are examples of operating systems.

optical disc

Storage device that can hold over 17 gigabytes of data, which is an equivalent

of several million typewritten pages. Lasers are used to record and read data on the disc. The two basic types of optical discs are compact discs (CDs) and digital versatile or video discs (DVDs).

output device

Equipment that translates processed information from the central processing unit into a form that can be understood by humans. The most common output devices are monitors and printers.

people

End users who use computers to make themselves more productive.

personal digital assistant (PDA)

A device that typically combines pen input, writing recognition, personal organizational tools, and communication capabilities in a very small package. Also called handheld PC and palm computer.

presentation file

A file created by presentation graphics programs to save presentation materials. For example, a file might contain audience handouts, speaker notes, and electronic slides.

printer

Device that produces printed paper output.

procedures

Rules or guidelines to follow when using hardware, software, and data.

program

Instructions for the computer to follow to process data. See software.

random-access memory (RAM)

Volatile, temporary storage that holds the program and data the CPU is presently processing. It is called temporary storage because its contents will be lost if electrical power to the computer is disrupted or the computer is turned off.

secondary storage

Permanent storage used to preserve programs and data that can be retained after the computer is turned off. These devices include floppy disks, hard disks, magnetic tape, CDs, DVDs, and more.

server

A host computer with a connection to the Internet that stores document files used to display web pages. Depending on the resources shared, it may be called a file server, printer server, communication server, web server, or database server.

Smartphone

A type of cell phone that offers a variety of advanced functionality, including Internet and e-mail.

software

Computer program consisting of step-by-step instructions, directing the computer on each task it will perform.

solid-state drive (SSD)

Designed to be connected inside a microcomputer system the same way an internal hard disk would be, but contains solid-state memory instead of magnetic disks to store data.

solid-state storage

A secondary storage device that has no moving parts. Data is stored and retrieved electronically directly from these devices, much as they would be from conventional computer memory.

specialized application

Programs that are narrowly focused on specific disciplines and occupations. Some of the best known are multimedia, Web authoring, graphics, virtual reality, and artificial intelligence.

supercomputer

Fastest calculating device ever invented, processing billions of program instructions per second. Used by very large organizations like NASA.

system software

“Background” software that enables the application software to interact with the computer. System software consists of the operating system, utilities, device drivers, and language translators. It works with application software to handle the majority of technical details.

system unit

Part of a microcomputer that contains the CPU. Also known as the system

cabinet or chassis, it is the container that houses most of the electronic components that make up the computer system.

tablet

A type of microcomputer that contains a thin system unit, most of which is the monitor. The best-known tablets are Apple’s iPad, Motorola’s Zoom, and HP’s Slate.

tablet computer

A type of notebook computer that accepts handwritten data, using a stylus or pen, that is converted to standard text and can be processed by a word processor program.

USB drive

The size of a key chain, these hard drives connect to a computer’s USB port enabling a transfer of files; has a capacity of up to 64GB.

utility

Performs specific tasks related to managing computer resources or files. Norton Utility for virus control and system maintenance is a good example of a utility. Also known as service programs.

virus

Hidden instructions that migrate through networks and operating systems and become embedded in different programs. They may be designed to destroy data or simply to display messages.

web

Introduced in 1992 and prior to the web, the Internet was all text. The Web made it possible to provide a multimedia interface that includes graphics, animations, sound, and video.

wireless revolution

A revolution that is expected to dramatically affect the way we communicate and use computer technology.

worksheet file

Created by electronic spreadsheets to analyze things like budgets and to predict sales.

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34.Supercomputers 超级计算机 35.Minicomputers 中型电脑 36.Microcomputers 微机个人计算机 37.Desktop computer 台式电脑 38.Notebook computer, laptop computers 手提式、膝上轻便 电脑 39.Tablet PC 支持手写的平板电脑 40.Handheld computer 掌上电脑 41.Windows mobile 操作系统 42.Electronic Dictionary 电子词典 43.Palm computer 掌上电脑 44.Handheld computer 手持电脑 https://www.360docs.net/doc/fd592263.html,itary PDA 军用PDA 46.System unit:microprocessor and memory 微处理器 和内存 47.Input/output devices 输入和输出 48.Keyboard 键盘 49.Mouse 鼠标 50.Monitor 显示器printer 打印机 51.Secondary storage 辅助存储器 https://www.360docs.net/doc/fd592263.html,pact discs (CD) 激光盘 53.Digital versatile or video discs (DVD) 数 字化视频光盘 54.High-definition discs (HDD) 高清盘 55.Document files 文字处理 56.Worksheet files 工作表单 57.Database files 数据库文件 58.Presentation files 演示文件 https://www.360docs.net/doc/fd592263.html,puter competency refers to acquiring computer-related skills-indispensable tools for today. 2.Present an overview of an information system 概述信息系统 3.Understand these basic parts and how connectivity through the Internet.5大组成部分及如何访问网络 4.Filled out computerized forms, took computerized tests 填写电脑化的表格和考试 5.People are surely the most important part of any information system. 人是信息系统中最重要的组成元素 6.Our lives are touched every day by computers and information systems. 我们的生活每天都要接触计算机、信息系统 分不开 7.Making IT Work for You:present interesting and practical IT applications. 实用 的信息技术应用 8.Tips:suggestions ranging from the basics of keeping your computer system running smoothly to how to protect your privacy while surfing the Web. 关于计算机运用和网上冲 浪安全的提示和建议 9.Careers in IT:provides job descriptions, projected employment demands, educational requirements, current salary ranges, and advancement opportunities. 信息技术相关的 工作 https://www.360docs.net/doc/fd592263.html,puting Essentials Web site:more information on the Web. 本课本相关的网 络资源 11.Software are the instructions that tell the computer how to process date into the form you want. 软件就是指导计算机把 数据转换成信息的指令 12.In the most case, the words software and 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processor, spreadsheet, database manager and more. 独立的集成软件包包括文字处理、表格和数据库管理等功能 2.Presentation: programs that combine a variety of visual objects to create attractive visually interesting presentations. 利用可视化 的图形,创造吸引人的演示效果。 3.Software suites: a collection of separate application programs bundled together and sold as a group. 捆绑一起售卖的多个应用程序 4.Good communication skills and teaching experience, though a teaching degree may not be required, it may be preferred. 沟通技能和 授课经验 5.Experience with the latest software and hardware is essential. 熟悉最新的软件和硬件 6.Seek detail-oriented individuals with IT experience IT经验的细心人 ○5 1.Booting a system 启动电脑 2.Mundane 常规的 3.behind-the-scenes 幕后的 4.Warm boot 热启动Cold boot 冷启动 5.Embedded OS 嵌入式OS https://www.360docs.net/doc/fd592263.html,work OS 网络OS 7.Stand-alone OS 客户端OS 8.track 磁道 9.concentric ring同心圆 10.contiguous连续相邻的 11.wedge-shaped楔形的 12.sector扇区 13.Norton AntiVirus: 防毒 14.Norton CleanSweep: 系统清理 15.Web CleanUp: 上网痕迹清理 16.GoBack Personal Edition: 恢复设置 17.Norton 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https://www.360docs.net/doc/fd592263.html,munication channel 信道 6.Connection devices 连接设备 7.Data transmission specifications 数据传输规则 8.Twisted-pair cable 双绞线 9.Made up of copper wires 铜线 10.Coaxial cable 同轴电缆11.made up of a single solid-copper 12.Fiber-optic cable 光纤 13.Physical connections: 物理连接 14.Infrared: 红外线 15.Over short distances 短距离 16.Travel in a straight line 直线 17.In clear view of one another 18.Broadcast radio: 无线电通讯 https://www.360docs.net/doc/fd592263.html,e radio signals 无线电信号 20.Follow standard Wi-Fi 无线保真 21.Microwave: 微波 https://www.360docs.net/doc/fd592263.html,e high-frequency radio wave 23.line-of-sight communication 24.Be relayed by stations with dishes or antenna 天线接收传递 25.Bluetooth: 蓝牙技术 26.Pass through walls and nonmetal barriers 具有穿透性 27.Satellite: 卫星通讯 https://www.360docs.net/doc/fd592263.html,e satellites orbiting about 22000 miles above the earth 29.Offered by Intelsat通讯卫星协会 30.Rotate at a precise point and speed 位置和 速度严格定位 31.External modem 外置调制解调器 32.Internal modem 内置调制解调器 33.PC Card modem 卡式调制解调器 34.Wireless modem 无线上网卡 https://www.360docs.net/doc/fd592263.html,e for converting the digital signals to analog signals 数字、模拟信号转换 36.Transfer rate: 传输率 37.Bandwidth 带宽 38.Node: any device connected 节点 39.Client: a node uses resource 客户端 40.Server: a node sharing resources and performing specific task 服务器 41.Hub: the central node 集线器 https://www.360docs.net/doc/fd592263.html,work interface cards: 网卡 https://www.360docs.net/doc/fd592263.html,work operating systems: 网络OS 44.Distributed processing: 分布处理 45.Local Area Network: 局域网 https://www.360docs.net/doc/fd592263.html,work gateway 网关 47.Ethernet: 以太网 48.Metropolitan Area Network: 城域网 49.Wide Area Network: 广域网 https://www.360docs.net/doc/fd592263.html,work configurations 拓扑结构 51.Strategies 策略,模式 https://www.360docs.net/doc/fd592263.html,puter communications: is the process of sharing data, programs, and information between two or more computers. 计算机之间共享信息数据资源 2.Connectivity: is a concept related to using computer networks to link people and resources to the world of larger computers and Internet. 3.Protocol: a set of communication rules for the exchange of information. 协议是传输信息的规则 https://www.360docs.net/doc/fd592263.html,work architecture: describes how a network is arranged and how resources are coordinated and shared. 搭建,协调和共享 5.Terminal network: processing power is centralized in one large computer, other terminals connected to this host. 计算机能力 集中在中央主机上,即主机终端联机模式 6.Client/server networks: server nodes coordinate and supply specialized services, and client nodes request the services. 客户端请求 服务,服务器提供服务 7.Peer-to-peer networks: nodes have equal authority and can act as both clients and servers. 各节点角色相同 8.Intranets: a private network within an organization that resembles the Internet. 企业 内部网是一个私有网络 9.Extranets: a private network that connects more than one organization. 企业间的外联网 10.Firewall: a security system designed to protect an organization’s network against external threats. 防范外部威胁 11.Proxy server: a gatekeeper to monitor and evaluate all communication. 代理服务器

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