McGraw-Hill Technology Education © 2004 by the McGraw-Hill Companies, Inc. All Rights Reserved. Introduction to Computer Essentials

McGraw-Hill Technology Education © 2004 by the McGraw-Hill Companies, Inc. All Rights Reserved. CE-2 Objectives 1.Explain the five parts of an information system. 2.Distinguish application software from system software. 3.Distinguish four kinds of computers.

McGraw-Hill Technology Education © 2004 by the McGraw-Hill Companies, Inc. All Rights Reserved. CE-3 Objectives cont. 4.Describe document, worksheet, database, and presentation files. 5.Explain computer connectivity, the wireless revolution, and the Internet.

McGraw-Hill Technology Education © 2004 by the McGraw-Hill Companies, Inc. All Rights Reserved. CE-4 Outline Information Systems People Software –Application Software –System Software

McGraw-Hill Technology Education © 2004 by the McGraw-Hill Companies, Inc. All Rights Reserved. CE-5 Outline cont. Hardware –Types of Computers –Microcomputer Hardware Data Connectivity, the Wireless Revolution, and the Internet Visual Summary

McGraw-Hill Technology Education © 2004 by the McGraw-Hill Companies, Inc. All Rights Reserved. CE-6 Computer Competency Overview Become competent in computer related skills –Understand computer basics –Be aware of connectivity through the Internet and the Web Know how to use a computer to perform tasks Understand the essentials of information technology (IT)

McGraw-Hill Technology Education © 2004 by the McGraw-Hill Companies, Inc. All Rights Reserved. CE-7 Information Systems 1.People 2.Procedures 3.Software 4.Hardware 5.Data

McGraw-Hill Technology Education © 2004 by the McGraw-Hill Companies, Inc. All Rights Reserved. CE-8 People People are the most important part of an information system –Entertainment –Medicine –Education –Business Computers and information touch our lives hundreds of times each day

McGraw-Hill Technology Education © 2004 by the McGraw-Hill Companies, Inc. All Rights Reserved. CE-9 Software Software is another name for programs  Instructions that tell the computer how to process data Two kinds of software  System software – what the computer uses  Application software – what you use

McGraw-Hill Technology Education © 2004 by the McGraw-Hill Companies, Inc. All Rights Reserved. CE-10 Software Application Software –General purpose and special purpose applications –One example is a browser System Software –Helps the computer to manage its own resources –One example is the operating system

McGraw-Hill Technology Education © 2004 by the McGraw-Hill Companies, Inc. All Rights Reserved. CE-11 Hardware 1.Supercomputer 2.Mainframe computers 3.Minicomputers 4.Microcomputers

McGraw-Hill Technology Education © 2004 by the McGraw-Hill Companies, Inc. All Rights Reserved. CE-12 Microcomputer Hardware System unit (system cabinet or chassis) –Microprocessor –Memory Random access memory (RAM) Input/output devices Secondary storage devices Floppy disks Hard disks Optical discs

McGraw-Hill Technology Education © 2004 by the McGraw-Hill Companies, Inc. All Rights Reserved. CE-13 Data Document files Worksheet files Database files Presentation files

McGraw-Hill Technology Education © 2004 by the McGraw-Hill Companies, Inc. All Rights Reserved. CE-14 Connectivity, the Wireless Revolution, and the Internet Connectivity - capability to share information with other computers Wireless communication devices Computer network –Internet –World Wide Web

McGraw-Hill Technology Education © 2004 by the McGraw-Hill Companies, Inc. All Rights Reserved. CE-15 Key Terms application software browser chassis compact disc (CD) computer competency computer network connectivity data database file database management systems desktop computer digital versatile (or video) disc (DVD)

McGraw-Hill Technology Education © 2004 by the McGraw-Hill Companies, Inc. All Rights Reserved. CE-16 Key Terms cont. document file end user floppy disk handheld computer hard disk hardware information information system information technology input device internet keyboard

McGraw-Hill Technology Education © 2004 by the McGraw-Hill Companies, Inc. All Rights Reserved. CE-17 Key Terms cont. mainframe computer memory microcomputer microprocessor midrange computer minicomputer monitor mouse notebook computer operating system optical disk output device palmtop computer people

McGraw-Hill Technology Education © 2004 by the McGraw-Hill Companies, Inc. All Rights Reserved. CE-18 Key Terms cont. personal digital assistant (PDA) presentation file presentation graphics primary storage printer procedures program random access memory (RAM) secondary storage devices software spreadsheet supercomputer

McGraw-Hill Technology Education © 2004 by the McGraw-Hill Companies, Inc. All Rights Reserved. CE-19 Key Terms cont. system cabinet system software system unit video display screen Web wireless revolution word processors worksheet file World Wide Web (WWW)

McGraw-Hill Technology Education © 2004 by the McGraw-Hill Companies, Inc. All Rights Reserved. CE-20 FAQs 1.What is an information system? 2.What is a microcomputer? 3.What is memory? 4.Name two input devices. 5.What is secondary storage? 6.What are the four common types of data files?

McGraw-Hill Technology Education © 2004 by the McGraw-Hill Companies, Inc. All Rights Reserved. CE-21 Discussion Questions 1.Discuss why computer competency is important. 2.Explain the five parts of an information system. 3.What is system software? Why is it called the operating system? 4.What is the wireless revolution? 5.Explain computer connectivity.