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Jasmeet Chap 01 Intro To Computers
 

Jasmeet Chap 01 Intro To Computers

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    Jasmeet Chap 01 Intro To Computers Jasmeet Chap 01 Intro To Computers Presentation Transcript

    • CHAPTER 1
      INTRODUCTION TO COMPUTERS
      By : Jasmeet Khosa
    • What is a computer ?
      How is computer defined ?
      • Electronic device operating under the control of instructions stored in its own memory
      Accepts Data
      Processes Data into Information
      Produces and stores results
    • What is a computer ?
      What is the information processing cycle ?
      • Input
      • Process
      • Output
      • Storage
      • Communication
    • The components of a computer ?
      What is an input device ?
      • Hardware used to enter data and instructions.
      What is and output device ?
      • Hardware that conveys information to one or more people.
      What is a system Unit ?
      • Case containing electronic components used to process data.
    • The components of a computer ?
      What are the two main components on the motherboard ?
      Central Processing Unit (CPU)
      * Also called as processor.
      Memory
    • The components of a computer ?
      What is storage?
      • Holds Data, instructions and information for future use.
      • The two components of storage are:
      Storage Media
      Storage Device
    • The components of a computer ?
      Examples of storage media are:
      Portable, thin memory cards
      USB flash drive
      Floppy Disk
      Compact Disk
      (CD)
      Hard Disk
    • The components of a computer ?
      What is a communications device ?
      Hardware components that enables a computer to send and receive Data, instructions, and information.
      Occurs over cables, telephone lines, cellular radio network, Satellites, and others transmission media.
    • ADVANTAGES AND DISADVANTAGES OF USING COMPUTERS ?
      What is the advantages of using computers ?
      Reliability
      Speed
      Communications
      Consistency
      Storage
    • ADVANTAGES AND DISADVANTAGES OF USING COMPUTERS ?
      What is the disadvantages of using computers ?
      Violation of privacy
      Impact on Labor Force
      Health Risks
      Impact on Environment
    • Network and the internet ?
      What is a network ?
      • Collection of computers and devices connected together.
      Communications Device
      Transmission Media
      Enable a connection between computers
      Cables
      Satellites
      Telephone lines
      Cellular radio
      One type is a modem
    • Network and the internet ?
      To save time and money
      What are the reasons to internet ?
      To share
      Resources
      Information
      Hardware devices
      Data
      Software programs
    • Network and the internet ?
      Why do users access the internet ?
      Communication
      Information
      Shopping
      Banking and investing
      Classes
      Entertainment
    • COMPUTER SOFTWARE?
      What is a software ?
      Consists of a series of instructions that tells the computer what to do
      Also called a program
    • COMPUTER SOFTWARE?
      What is system software ?
      • Programs that control or maintain the operations of the computer and its devices.
      What is application software ?
      • Programs that performs that perform specific tasks for users.
      What is a programmers ?
      • Someone who develops applications or system software.
    • Categories of computers ?
      What are the categories of computers ?
      • Microcomputers
      • Mobile computers and mobile devices
      • Midrange Servers
      • Mainframes
      • Supercomputers
      • Embedded Computers
    • Categories of computers ?
      What are the categories of computers ?
      Under microcomputers there are :
      Desktop
      Laptop
      Tablet Pc
      Palm PC
      PDA
      Net book
    • SERVERS?
      What types of servers are there ?
      • Midrange server
      • Powerful, large computer that supports up to a few thousand computer.
      • Mainframe server
      • Very powerful, expensive computer that supports thousands of computers.
      • Supercomputer
      -The faster, most powerful, most expensive computer. Used for application requiring complex mathematical calculations.
    • Elements of an information system ?
      What are the information system elements ?
      Data
      Hardware
      Software
      Procedures
      People
    • Computer applications in society ?
      • Education
      • Finance
      • Government
      • Healthcare
      • Science
      • Publishing
      • Travel
      • Industry
    • Question ?
      1) Give me few example of who needs and uses a power computer?
    • Question ?
      • Engineers
      • Scientists
      • Architects
      • Desktop publishers
      • Graphic artists
    • Question ?
      2) What are the few functions of a PDA ?
    • Question ?
      • Calendar
      • Appointment book
      • Address book
      • Calculator
      • Notepad