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What is a Computer?. What is a Computer?. Electronic device Operates under instructions stored in its memory Accepts data Processes data Produces results Stores results for future use. Data versus Information. Data (Input)

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Presentation Transcript
what is a computer1
What is a Computer?
  • Electronic device
    • Operates under instructions stored in its memory
    • Accepts data
    • Processes data
    • Produces results
    • Stores results for future use
data versus information
Data versus Information
  • Data (Input)
    • Unprocessed collection of text, numbers, symbols, images, audio, video
  • Information (Output)
    • Conveys meaning that is useful
components of a computer
Components of a Computer
  • Input devices
  • Output devices
  • System unit
  • Storage devices
  • Communication devices
advantages
Advantages
  • Speed
  • Reliability
  • Consistency
  • Storage
  • Communications
disadvantages
Disadvantages
  • Health risks
  • Violation of privacy
  • Public safety
  • Impact on labor force
  • Impact on environment
network
Network
  • What is ….
    • Collection of computers and devices connected together
  • Advantages of networks
    • Allows sharing of resources such as hardware, software, data, and info
internet
Internet
  • What is…..
    • Collection of networks
  • What do you use the Internet for?
what is software
What is Software?
  • Program
    • Series of related instructions
    • Tells computer what tasks to perform and how to perform them
  • Graphical User Interface (gooey)
    • Used to interface with software using text, graphics, and visual images (icons)
two types of software
Two Types of Software
  • System
    • Control or maintain operations of computer
    • Serves as interface between user and application software
    • Two types– operating & utility
      • Operating – coordinates activities among hardware devices
      • Utility – maintenance type tasks i.e. managing printers
two types of software1
Two Types of Software
  • Application
    • Programs designed to make users more productive and assist with personal tasks
categories of computers
Categories of Computers
  • Personal computers
  • Mobile computers and mobile devices
  • Game consoles
  • Servers
  • Mainframes
  • Supercomputers
  • Embedded computers
categories of users
Categories of Users
  • Home
  • Small Office/Home Office
  • Mobile
  • Power
  • Enterprise
computer applications in society
Computer Applications in Society
  • Education
  • Finance
  • Government
  • Health care
  • Science
  • Publishing
  • Travel
  • Manufacturing
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