计算机科学引论前六章答案

Chapter 1

Crssword Puzzle

people

enduser

procedures

documentfile

devicedriver

databasefile

operationsystem

hardware

Internet

modem

software

information

data

tablet PC

Multiple Choice

b

b

a

b

d

d

a

c

d

d

Open-ended

An information system has five parts:people,procedures,software, hardware and data.

People:Are end users who use computer to make themselves more productive.

Procedures:Specify rules or guidelines for computer operations.

Software:Provides step-by-step instructins for computer hardware.

Hardware:Processes the data to create information.

Data:Consist of unprocessed facts including text,numbers, image and sounds.

People are the most important part of any information system.

System software helps the computer manage its own internal resources.It includes three kinds of programs:operating systems,utilities and device drivers programs.

Basic applications are the kinds of programs to be considered computer competent.

Specialized applications are more narrowly focused on specific disciplines and occupations.

Basic applications have some types,such as browser,word processor,spreadsheet ,and so on.

Also specialized applications have many types,some of the best known are graphics,audio and video,multimedia,Web authoring ,and artificial intelligence programs.

There are four types of computers:supercomputers,mainframe computers,minicomputers,and microcomputers.

Supercomputers are the most powerful type of computer.

Mainframe computers occupy specially wired,air-conditioned rooms,they are capable of great processing speeds and data storage.

Minicomputers are refrigeratorsized machines.

Microcomputers are the least powerful,yet the most widely used and fastest-growing,type of computer.

Microcomputers are the most common type of computers.

There are four types of microcomputers:Desktop computers,Notebook computers,Handheld computers and PDA.

Connectivity is the capability of you microcomputer to share the information with other computers.

Wireless revolution dramatica