computing ESSENTIALS     Copyright 2003 The McGraw-Hill Companies, Inc CHAPTER Information Technology, the Internet, and You computing ESSENTIALS    

Copyright 2003 The McGraw-Hill Companies, Inc. 2 Competencies Information systems Application software vs. system software Computer types Types of files Connectivity, Wireless Revolution, and the Internet computing ESSENTIALS    

Copyright 2003 The McGraw-Hill Companies, Inc. 3 Information Systems People Goal is to improve the productivity of people Procedures Guidelines to follow using software, hardware, data Software Hardware Data Raw unprocessed facts computing ESSENTIALS    

Copyright 2003 The McGraw-Hill Companies, Inc. 4 Connectivity Allows computers to connect and share information Expands the capabilities and usefulness of users computing ESSENTIALS    

Copyright 2003 The McGraw-Hill Companies, Inc. 5 People Most important part of an information system Direct contact Indirect contact computing ESSENTIALS    

Copyright 2003 The McGraw-Hill Companies, Inc. 6 Software Series of instructions that process data Two kinds System software Used by the computer Application software Used by the user computing ESSENTIALS    

Copyright 2003 The McGraw-Hill Companies, Inc. 7 System Software Enables application software to interact with computer hardware Background software Operating system software Most important system software Executes application software Stores data and programs computing ESSENTIALS    

Copyright 2003 The McGraw-Hill Companies, Inc. 8 Application Software End-user software General-purpose programs Internet Explorer, Microsoft Word, PowerPoint Special-purpose programs Custom written for specialized tasks computing ESSENTIALS    

Copyright 2003 The McGraw-Hill Companies, Inc. 9 Hardware Physical electronic devices Hardware functions Input/Output data Process data Storage Communication computing ESSENTIALS    

Copyright 2003 The McGraw-Hill Companies, Inc. 10 Types of Computers Supercomputers Mainframe computers Minicomputers Microcomputers computing ESSENTIALS    

Copyright 2003 The McGraw-Hill Companies, Inc. 11 Supercomputers Most powerful type of computer High data capacity Used by large organizations computing ESSENTIALS    

Copyright 2003 The McGraw-Hill Companies, Inc. 12 Mainframe Computers Capable of great processing speed Large data storage capacity Occupy large air-conditioned rooms computing ESSENTIALS    

Copyright 2003 The McGraw-Hill Companies, Inc. 13 Minicomputers Also known as midrange computers Desk-sized machines Usually used for specific purposes Controlling manufacturing processes Dedicated servers computing ESSENTIALS    

Copyright 2003 The McGraw-Hill Companies, Inc. 14 Microcomputers Least powerful but most popular Sizes range from desktop to handheld Includes: Desktop Laptop PDAs computing ESSENTIALS    

Copyright 2003 The McGraw-Hill Companies, Inc. 15 Microcomputer Hardware Physical equipment consist of System unit I/O devices Secondary storage computing ESSENTIALS    

Copyright 2003 The McGraw-Hill Companies, Inc. 16 System Unit Contains most of the electronic components Significant components Microprocessor Controls and manipulates data Memory Holds data and programs during processing computing ESSENTIALS    

Copyright 2003 The McGraw-Hill Companies, Inc. 17 Input/Output Devices Translation devices that interface the computer with humans Input devices Keyboard, mouse, scanner, digital camera Output devices Monitor, printer, speakers computing ESSENTIALS    

Copyright 2003 The McGraw-Hill Companies, Inc. 18 Secondary Storage Devices Store data and programs even after power is shut off Most common types Floppy disks Hard disks Optical disks (CD-ROMs, DVDs) Magnetic tapes computing ESSENTIALS    

Copyright 2003 The McGraw-Hill Companies, Inc. 19 Data Files Electronic storage of raw or processed data Common types Document Worksheet Database Presentation computing ESSENTIALS    

Copyright 2003 The McGraw-Hill Companies, Inc. 20 Connectivity Computer’s ability to communicate with other computers Computer network Share information over large distances computing ESSENTIALS    

Copyright 2003 The McGraw-Hill Companies, Inc. 21 Wireless Revolution Most dramatic change in connectivity Widespread use of mobile communications Multifunctional devices Phones with monitors, cameras PDAs with Internet connections computing ESSENTIALS    

Copyright 2003 The McGraw-Hill Companies, Inc. 22 The Internet Largest network in the world Global connectivity World Wide Web Internet service providing multimedia interface computing ESSENTIALS    

Copyright 2003 The McGraw-Hill Companies, Inc. 23 A Look to the Future Powerful software Tools in today's job market Powerful hardware Increasingly more powerful Connectivity Link with others to share information, resources Security and Privacy Increased connectivity increases risk too computing ESSENTIALS    