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Chapter 1. Introduction to Computers. Overview. Explain Computer Literacy Define Hardware & Software Identify Computer Components Differentiate Various Software Types Differentiate Computer Platforms. A World of Computers. Notable Technology Prognostications

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Chapter 1

Chapter 1

Introduction to Computers


Overview
Overview

  • Explain Computer Literacy

  • Define Hardware & Software

  • Identify Computer Components

  • Differentiate Various Software Types

  • Differentiate Computer Platforms


A world of computers
A World of Computers

  • Notable Technology Prognostications

    • “I think there is a world market for maybe five computers.”

      • Thomas Watson, Chairman of IBM, 1943

    • “Computers in the future may weigh no more than one and a half tons.”

      • Popular Mechanics, 1949

    • “There is no reason anyone would want a computer in their home.”

      • Ken Olson, President of DEC, 1977


A world of computers1
A World of Computers

  • Computer Use

    • Everywhere

      • Impact Virtually Everyone

      • Creation, Collection, Dissemination

        • Price/Power

        • Competition

    • Computer Literacy

      • Understanding of Computers and Their Uses

        • Technical Knowledge Not Required


What is a computer
What is a Computer?

  • Definition

    • Electronic Machine

      • Controlled by Instructions in its Memory

    • Accepts Data

      • Raw Facts, Figures, & Symbols

    • Processes Data Into Information

      • Organized, Meaningful, and Useful

    • Produces & Stores Results


What is a computer1
What is a Computer?

  • Information Processing Cycle

    • Input — Accepts Data

    • Processing — Manipulate Data

    • Output — Produce Result

    • Storage — Store Result

    • Communication — Send Result to Others


Hardware
Hardware

  • Components & Equipment

    • Electronic

    • Mechanical


Hardware1
Hardware

  • Input Devices

    • Used to Enter Data & Instructions

      • Keyboard

      • Mouse

      • Scanner

      • Digital Camera

      • Video Camera

      • Microphone


Hardware2
Hardware

  • System Unit

    • Enclosed in a Case

      • Contains Electronic Components

        • Connected to Motherboard

    • Processes Data

      • Memory

        • Temporary Storage for Data & Instructions

      • Central Processing Unit (CPU)

        • Carries Out Instructions

        • Tells Computer What to Do


Hardware3
Hardware

  • Output Devices

    • Conveys Information to User

      • Monitor

      • Printer

      • Speakers


Hardware4
Hardware

  • Storage

    • Holds Data & Instructions for Future Use

      • Media

        • Physical Material

      • Device

        • Reads / Writes Data


Hardware5
Hardware

  • Communications Devices

    • Send / Receive Data & Instructions

    • Establishes Connection Between Devices

      • Uses Telephone Lines, Cables, & Satellites

        • Modem

          • Converts Digital Signals to Analog & Vice Versa


Hardware6
Hardware

  • Networks

    • Connected Computers / Devices

      • Share Resources

        • Hardware

        • Software

        • Data & Information

      • Save Time & Money

    • Internet

      • Millions of Computers Linked Worldwide


Software
Software

  • AKA Program

  • Series of Instructions

  • Tells Computer What to Do


Software1
Software

  • Systems Software

    • Controls Operations & Hardware

      • Operating System

      • Utility Programs

  • Application Software

    • Performs Specific Tasks for Users

      • Word Processing

      • Spreadsheet

      • Database


Platforms
Platforms

  • Personal Computers

    • Desktops

      • PCs & Compatibles

        • Windows OS

      • Apple

        • Macintosh OS


Platforms1
Platforms

  • Mobile Computers

    • Portable

      • Notebook

        • AKA Laptop

      • Tablet

        • Stylus, Annotation

      • Netbook

        • Smaller, WI-FI, No DVD


Platforms2
Platforms

  • Mobile Devices

    • Smart Phone

      • Horizontal

    • Media Player

    • Digital Camera

    • Handheld

      • Vertical


Platforms3
Platforms

  • Game Console

    • Video Games

  • Embedded

    • Component in Larger Product

      • Phone, Thermostat, Security, Airbag


Platforms4
Platforms

  • Larger Systems

    • Servers

      • Networks

    • Mainframe

    • Supercomputer


Platforms5
Platforms

  • Comparison


Industry applications
Industry Applications

  • Education

    • Distance Learning

  • Finance

    • Online Banking & Investing, Tax Prep

  • Government

    • 911 Dispatching, Squad Notebooks

  • Healthcare

    • Electronic Patient Records, PPID


Industry applications1
Industry Applications

  • Science

    • Collect, Analyze, & Model Data

  • Publishing

    • E-books, PDF Manuals, MP3s

  • Travel

    • Navigation Systems, E-tickets

  • Manufacturing

    • Production, Inventory, Quality Control


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