Computers: Information Technology in Perspective By Long and Long Copyright 2002 Prentice Hall, Inc. The Technology Revolution Chapter 1 Mr. Jad Matta

Quit Be an insider…..  Computer-knowledgeable people are now considered mainstream - even cool!  Everyone else is on the outside looking in. 1.2

Quit What is IT? 1.3 Information Technology is the integration of computing technology and information processing. Information Technology is the integration of computing technology and information processing. Reprinted with permission of Compaq Computer Corporation. All Rights Reserved.

Quit Employers Want IT Competency  83% think computer competency skills are important or very important in the hiring decision.  96% want basic word processing skills.  93% want experience.  86% want basic spreadsheet skills.  83% want basic database skills.  75% want basic presentation software skills.  64% want internet and searching skills. 1.4 From: T.H.E. Journal - September 1997: What Computer Skills Do Employers Expect From Recent College Graduates?

Quit Technology Revolution: Today  Enabling technologies  How personal computers affect us:  At work (mobile computing)  At home (Internet)  At play ( , chat, newsgroups) 1.5

Quit Technology Revolution: Tomorrow  Virtual house tours  On-line voting  Telemedicine  Cashless society  Continuous stock market 1.6

Quit Evolution of Computing s mid- 1970s 2001 No Computers PCs introduced! Very expensive computers for large companies. Computer professionals ran the show. Powerful PCs on every desktop. Explosion of applications.

Quit Says PC Magazine: How Fast Is 1 GHz?  A 1970 Mustang would do 150 mph  A 1971 microprocessor (the 1st) ran at 108 KHz If cars had increased in speed as much as processors, a new Mustang would do about 22,000,000 mph!

Quit OUTPUTOUTPUT Information Data PROCESSPROCESS Data vs. Information INPUTINPUT

Quit Global Village 1.10 Computer Networks Global Village

Quit Going Online  Internet (the Net)  Internet Service Provider (ISP)  Information Service (like AOL)  Modems  Online/Offline  Download/Upload  MP3 players 1.11

Quit Internet Services   Chat  Videophone  Gaming  Newsgroups  World Wide Web 1.12

Quit Hardware Basics INPUT PROCESS ChipsChips RAMRAM PeripheralsPeripherals STORAGE OUTPUT SoftcopySoftcopy HardcopyHardcopy Computer System Components

Quit Software Basics  Programs 1.14 Application Software Performs specific task for user System Software Manage, maintain & control system resources

Quit Computer Systems Basics 1.15 Computing Power is the key! Notebook PCs Desktop PCs Workstations Server Computers Thin Client Computers Supercomputers Handheld Computers Personal Computers

Quit Personal Computers 1.16 Wintel PC Platform = Windows 9x/Me/ Intel (or compatible) processor chip Wintel PC Platform = Windows 9x/Me/ Intel (or compatible) processor chip Mac Platform = Mac  OS X + Motorola  PowerPC  chip Mac Platform = Mac  OS X + Motorola  PowerPC  chip Personal Computers IBM PC introduced in 1981

Quit Notebook PCs (Laptops) 1.17 Port Replicators Docking Stations

Quit Desktop PCs 1.18  System unit  Tower  Footprint  Multimedia applications  Configuration  Motherboard  Keyboard  Point-and-draw device  Monitor  Printer  Hard disk  Floppy disk drive  Optical disk drive  Microphone  Speakers

Quit Workstations 1.19 CAD “Souped-up PCs” for “Power Users” Courtesy of Intergraph Corporation Workstations

Quit Client/Server Computing  Server  PC to Supercomputer  Data storage and applications software  Client  PC, workstation or thin client  Requests processing or support from server  Applications Software  Front-end (client)  Back-end (server)  Enterprise-wide Systems  Proxy server computer 1.20 Server Computers

Quit Supercomputers  Processor-bound applications  100 times faster than typical server  Used for  Scientific simulations and forecasting  Medicine  Advanced graphics 1.21 Supercomputers

Quit What Can Computers Do?  Input/Output operations  Reads input  Writes output  Processing operations  Math (computation)  Decision making (logic) 1.22 Photo courtesy of Imation Corporation

Quit Why Use Computers?  Speed  Accuracy  Consistency  Reliability  Communications  Memory

Quit Using Computers Hardware Software People Procedures Data Word Processing Spreadsheets Database Graphics/Presentation Desktop Publishing Communications PIM Information Systems Personal Computing Surfing Communication Education & Reference Entertainment & Edutainment Science, Research & Engineering

Computers: Information Technology in Perspective By Long and Long Copyright 2002 Prentice Hall, Inc. The Technology Revolution The End