Using Information Technology Chapter 1 Introduction to Information Technology

2 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. Introduction to Information Technology Mind Tools for Your Future 1.1Infotech Is Commonplace: Cellphones, , the Internet, & the E-World 1.2The All-Purpose Machine: The Varieties of Computers 1.3Understanding Your Computer: How Can You Customize Your Own PC? 1.4Where is Information Technology Headed?

Introduction to Information Technology 3 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. Say goodbye to the personal computing era. Just on the horizon is the era that comes next--the personal information era. --Kevin Maney, Technology Journalist Pervasive computing trends: Information overload Less need for memorizing data Surge in multitasking activity

Introduction to Information Technology 4 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. 1.1 Infotech Becomes Commonplace: Cellphones, , the Internet, & the E- World Information technology (infotech):infotech Computers - programmable multiuse machines that convert data into information Communications - electromagnetic devices and systems for communicating over long distances

Introduction to Information Technology 5 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. The Telephone Grows Up Approximately 1 billion people using cellphones Internet phones are cell phones plus: Web services Video

Introduction to Information Technology 6 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. Youve Got Mail! s Mass Impact (electronic mail) - messages transmitted over a network Network - communications system connecting two or more computers

Introduction to Information Technology 7 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. The Internet, the World Wide Web, & the Plumbing of Cyberspace Cyberspace encompasses the whole wired and wireless world of communications: The Internet - the mother of all networks The World Wide Web - multimedia part of Netmultimedia

Introduction to Information Technology 8 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. The E-World & Welcome to It E-business E-commerce E-government E-learning E-pinions E-tailing E-waste

Introduction to Information Technology 9 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. 1.2 The All-Purpose Machine: The Varieties of Computers All Computers, Great & Small: The Categories of Machines 1. Supercomputers Supercomputers 2. Mainframes 3. Workstations 4. Microcomputers 5. Microcontrollers NEC Earth Simulator – the worlds fastest computer

Introduction to Information Technology 10 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. All Computers, Great & Small: The Categories of Machines 1. Supercomputers 2. Mainframes 3. Workstations 4. Microcomputers 5. Microcontrollers IBM z900

Introduction to Information Technology 11 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. All Computers, Great & Small: The Categories of Machines 1. Supercomputers 2. Mainframes 3. Workstations 4. Microcomputers 5. Microcontrollers Workstation – Sun Ultra450

Introduction to Information Technology 12 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. All Computers, Great & Small: The Categories of Machines 1. Supercomputers 2. Mainframes 3. Workstations 4. Microcomputers 5. Microcontrollers HP Compaq Business d220 tower microcomputer

Introduction to Information Technology 13 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. All Computers, Great & Small: The Categories of Machines 1. Supercomputers 2. Mainframes 3. Workstations 4. Microcomputers 5. Microcontrollers Compaq Evo desktop microcomputer

Introduction to Information Technology 14 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. All Computers, Great & Small: The Categories of Machines 1. Supercomputers 2. Mainframes 3. Workstations 4. Microcomputers 5. Microcontrollers Laptop computer

Introduction to Information Technology 15 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. All Computers, Great & Small: The Categories of Machines 1. Supercomputers 2. Mainframes 3. Workstations 4. Microcomputers 5. Microcontrollers Personal Digital Assistant

Introduction to Information Technology 16 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. All Computers, Great & Small: The Categories of Machines 1. Supercomputers 2. Mainframes 3. Workstations 4. Microcomputers 5. Microcontrollers Microcontrollers

Introduction to Information Technology 17 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. Servers Server - a central computer that holds collections of data & programs for clients Clients - PCs, workstations, & other devices Server + Clients linked together form a client/server network

Introduction to Information Technology 18 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. 1.3 Understanding Your Computer: What If You Custom-Ordered Your Own PC? How Computers Work - Concept #1 The purpose of a computer is to process data into information. Data The raw facts and figures that are processed into information Information Data that has been summarized or otherwise manipulated for use in decision making

Introduction to Information Technology 19 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. Hardware All the machinery and equipment in a computer system Software All the instructions that tell the computer how to perform a task How Computers Work - Concept #2 Computers consist of hardware and software.

Introduction to Information Technology 20 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. How Computers Work - Concept #3 All computers follow the same five basic operations. 1. Input 2. Processing 3. Storage 4. Output 5. Communications Keyboard Mouse

Introduction to Information Technology 21 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. How Computers Work - Concept #3 All computers follow the same four basic operations 1. Input 2. Processing 3. Storage 4. Output 5. Communications Case or system cabinet

Introduction to Information Technology 22 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. How Computers Work - Concept #3 All computers follow the same four basic operations 1. Input 2. Processing 3. Storage 4. Output 5. Communications Processor chip

Introduction to Information Technology 23 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. How Computers Work - Concept #3 All computers follow the same four basic operations 1. Input 2. Processing 3. Storage 4. Output 5. Communications Memory chips

Introduction to Information Technology 24 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. How Computers Work - Concept #3 All computers follow the same four basic operations 1. Input 2. Processing 3. Storage 4. Output 5. Communications Motherboard

Introduction to Information Technology 25 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. How Computers Work - Concept #3 All computers follow the same four basic operations 1. Input 2. Processing 3. Storage Storage 4. Output 5. Communications Primary storage (memory) - RAM Computer circuitry that temporarily holds data waiting to be processed Secondary storage (storage) - ROM The area in the computer where data or information is held permanently

Introduction to Information Technology 26 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. How Computers Work - Concept #3 All computers follow the same four basic operations 1. Input 2. Processing 3. Storage 4. Output 5. Communications

Introduction to Information Technology 27 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. How Computers Work - Concept #3 All computers follow the same four basic operations 1. Input 2. Processing 3. Storage 4. Output 5. Communications

Introduction to Information Technology 28 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. How Computers Work - Concept #3 All computers follow the same four basic operations 1. Input 2. Processing 3. Storage 4. Output 5. Communications CD Drive

Introduction to Information Technology 29 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. How Computers Work - Concept #3 All computers follow the same four basic operations 1. Input 2. Processing 3. Storage 4. Output 5. Communications

Introduction to Information Technology 30 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. How Computers Work - Concept #3 All computers follow the same four basic operations 1. Input 2. Processing 3. Storage 4. Output 5. Communications Speakers

Introduction to Information Technology 31 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. How Computers Work - Concept #3 All computers follow the same four basic operations 1. Input 2. Processing 3. Storage 4. Output 5. Communications

Introduction to Information Technology 32 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. How Computers Work - Concept #3 All computers follow the same four basic operations 1. Input 2. Processing 3. Storage 4. Output 5. Communications Monitor

Introduction to Information Technology 33 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. How Computers Work - Concept #3 All computers follow the same four basic operations 1. Input 2. Processing 3. Storage 4. Output 5. Communications Printer

Introduction to Information Technology 34 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. How Computers Work - Concept #3 All computers follow the same four basic operations 1. Input 2. Processing 3. Storage 4. Output 5. Communications

Introduction to Information Technology 35 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. Put all the hardware together and…

Introduction to Information Technology 36 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. You still need the software! System software Helps the computer perform essential operating tasks and enables the application software to run and…

Introduction to Information Technology 37 Copyright © Exclusive rights by The McGraw-Hill Companies, Inc. You still need the software! Application software Enables you to perform specific tasks--solve problems, perform work, or entertain yourself