Professor Michael J. Losacco CIS 1110 – Using Computers Introduction to Computers Chapter 1

Chapter1 2/23 Overview Explain Computer Literacy Define Hardware & Software Identify Computer Components Differentiate Various Software Types Differentiate Computer Platforms

Chapter1 3/23 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

Chapter1 4/23 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

Chapter1 5/23 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

Chapter1 6/23 What is a Computer? Information Processing Cycle Input — Accepts Data Processing — Manipulate Data Output — Produce Result Storage — Store Result Communication — Send Result to Others

Chapter1 7/23 Hardware Components & Equipment Electronic Mechanical

Chapter1 8/23 Hardware Input Devices Used to Enter Data & Instructions Keyboard Mouse Scanner Digital Camera Video Camera Microphone

Chapter1 9/23 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

Chapter1 10/23 Hardware Output Devices Conveys Information to User Monitor Printer Speakers

Chapter1 11/23 Hardware Storage Holds Data & Instructions for Future Use Media Physical Material Device Reads / Writes Data

Chapter1 12/23 Hardware Communications Devices Send / Receive Data & Instructions Establishes Connection Between Devices Uses Telephone Lines, Cables, & Satellites Modem Converts Digital Signals to Analog & Vice Versa

Chapter1 13/23 Hardware Networks Connected Computers / Devices Share Resources Hardware Software Data & Information Save Time & Money Internet Millions of Computers Linked Worldwide

Chapter1 14/23 Software AKA Program Series of Instructions Tells Computer What to Do

Chapter1 15/23 Software Systems Software Controls Operations & Hardware Operating System Utility Programs Application Software Performs Specific Tasks for Users Word Processing Spreadsheet Database

Chapter1 16/23 Platforms Personal Computers Desktops PCs & Compatibles Windows OS Apple Macintosh OS

Chapter1 17/23 Platforms Mobile Computers Portable Notebook AKA Laptop Tablet Stylus, Annotation Netbook Smaller, WI-FI, No DVD

Chapter1 18/23 Platforms Mobile Devices Smart Phone Horizontal Media Player Digital Camera Handheld Vertical

Chapter1 19/23 Platforms Game Console Video Games Embedded Component in Larger Product Phone, Thermostat, Security, Airbag

Chapter1 20/23 Platforms Larger Systems Servers Networks Mainframe Supercomputer

Chapter1 21/23 Platforms Comparison

Chapter1 22/23 Industry Applications Education Distance Learning Finance Online Banking & Investing, Tax Prep Government 911 Dispatching, Squad Notebooks Healthcare Electronic Patient Records, PPID

Chapter1 23/23 Industry Applications Science Collect, Analyze, & Model Data Publishing E-books, PDF Manuals, MP3s Travel Navigation Systems, E-tickets Manufacturing Production, Inventory, Quality Control