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Concepts

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Transcript

  • 1. Concepts of IT
  • 2. Hardware
    It refers to the physical components of your computer such as the system unit, mouse, keyboard and monitor.
  • 3. System Unit Components
    CPU (Central Processing Unit) or the Processor
    is the brain of the computer.
    The faster the CPU, the faster the whole computer.
    The hard disk drive is the "data center" of your PC.
    It holds all of your programs and data.
    The sound card is an expansion card that allows the
    computer to send audio information to any compatible
    audio device such as a set of speakers.
    The motherboard is the circuit board to which all the other components
    of the computer connect in some way.
    All plug into the motherboard's various slots and connectors. 
    The CPU also plugs into the motherboard via a Slot.
    RAM (random access memory)
    is a temporary storage device where files are stored
    The video card is an expansion card that allows the computer
    to send graphical information to a video display device
    such as a monitor or projector.
  • 4. Input/Output Ports
    • Universal Serial Bus (USB)
    • 5. Parallel Port
    • 6. Network Port
    • 7. Serial Port
  • Computer Performance
  • Memory & storage
    • RAM (Temporary )
    • 11. CDs , DVDs, Flash memory, Memory Card, Hard Disk Drive (Permanent )
  • Measurement of storage capacity
    It is important that you understand a little about the measurements used to define storage capacities.
    • Byte: There are eights bits in a Byte.
    • 12. KB - Kilobyte: There are 1024 bytes in a KB.
    • 13. MB - Megabyte: There are 1024 KB in a MB.
    • 14. GB - Gigabyte: There are 1024 MB in a GB.
    • 15. TB - Terabyte: There are 1024 GB in a TB.
  • Input Devices
    Keyboard, Mouse, Scanners, Web Cam, Microphones
    Output Devices
    Screens, Projectors, Printers,
    Speakers and headphones
  • 16. Software
    • Operating system is a special type of program which loads
    automatically when you start a computer.
    E.g. Windows, Macintosh, Linux
    • Software applications is a type of programs which could be
    used once the operating system has been loaded.
    E.g. Microsoft office Word, Computer games

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