Post on 19-Jun-2015
description
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Computer Concepts
Chapter 1
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Overview
Explain Computer Literacy
Define Hardware & Software
Identify Computer Components
Differentiate Various Software Types
Differentiate Computer Platforms
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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
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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
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What Is A Computer?
Computer Definition
Electronic Machine Controlled by Instructions in its Own Memory
Accepts Data Raw Facts, Figures, & Symbols
Processes Data Into Information Data that is Organized, Meaningful, and
Useful
Produces & Stores Results
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What Is A Computer?
Information Processing Cycle
Input — Accepts Data
Processing — Manipulate Data
Output — Produce Results
Storage — Store Results
Communication — Send Results to Others
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What Is A Computer?
Hardware & Software
Hardware
Electronic & Mechanical Equipment
Software
Instructions that Tell Hardware How to do Tasks
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Hardware
Common Hardware Components
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Hardware
System Unit
Box-like Device
Contains Electronic Components
Connected to Motherboard
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Hardware
Input Devices
Used to Enter Data & Instructions
Keyboard
Mouse
Scanner
Digital Camera
Video Camera
Microphone
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Hardware
Processing
Memory
Temporary Storage for Data & Instructions
Central Processing Unit (CPU)
Carries Out Instructions
Tells Computer What to Do
Attached to Motherboard
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Hardware
Output Devices
Conveys Information to User
Monitor
Printer
Speakers
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Hardware
Storage
Holds Data & Instructions for Future Use
Media
Physical Material
Device
Reads / Writes Data
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Hardware
Communications Devices
Establishes Connection Between Computers
Use Telephone Lines, Cables, & Satellites
Modem
Converts Digital Signals to Analog & Vice Versa
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Hardware
Networks
Collection of Connected Computers / Devices Share Resources
Hardware
Software
Data & Information
Save Time & Money
Internet Worldwide Network Linking Millions of Computers
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Software
Systems Software
Controls Computer Operations & Hardware
Operating System Set of Programs
Coordinates Activities Among Hardware Devices
Allows Users to Run Application Software
Utility Programs Allow Users to Perform Maintenance-type Tasks
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Software
Application Software
Performs Specific Tasks for Users
Word Processing
Spreadsheet
Database
Presentation
Personal Information Management (PIM)
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Software
Installation
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Software
Programs
Series of Instructions
Tells Computer What to Do
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Advantages & Disadvantages
Computer Advantages
Speed
Reliability
Consistency
Storage
Communications
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Advantages & Disadvantages
Computer Disadvantages
Violation of Privacy
Crime
Impact on Labor Force
Health Risks
Impact on Environment
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Platforms
Personal Computers
Desktops
PCs & Compatibles
Windows OS
Apple
Macintosh OS
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Platforms
Personal Computers
Notebook
AKA Laptop
Tablet
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Platforms
Mobile Computers
PDA
Smart Phone
Handheld
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Platforms
Computer Platforms
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Industry Applications
Education
Distance Learning Finance
Online Banking & Investing, Tax Prep Government
911 Dispatching, Squad Notebooks Healthcare
Electronic Patient Records, PPID
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Industry Applications
Science
Collect, Analyze, & Model Data Publishing
E-books, PDF Manuals, MP3s Travel
Navigation Systems, Reservations, E-tickets
Manufacturing
Production, Inventory, Quality Control