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Physical Features of a Computer System

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  • State the full form of SMPS.
    Switched Mode Power Supply
  • A Demodulator converts the data from ___________ to ____________ signals.
    analog to digital
  • What is a barcode reader?
    It is an optical machine which reads data in the form of vertical lines.
  • ROM stores instructions to ________ the computer and load the ____________ system.
    boot, operating
  • What is the function of a QR code scanner?
    It reads data in the form of matrix or pattern of dots.
  • Why are CRT monitors not used today?
    They were bulky and used a lot of electricity.
  • State two drawbacks of plotters.
    They are slow and occupy a large space.
  • A ______________ within the mouse detects the _______________ of the ball.
    sensor, motion
  • Why is LED technology better?
    It displays true colour quality and high definition videos.
  • In drum plotters, the pen is mounted on a __________ , which moves across the width of the paper.
    carriage
  • Why do architects and product designers use plotters?
    To plat building maps or product designs.
  • What is an SMPS?
    It is a transformer that converts AC to DC
  • State one function of Modem.
    It is used to transfer information over telephone lines.
  • State the full form of TFT.
    Thin film transistor
  • What is the full form of RAM.
    Random Access Memory
  • A memory card is also called electronic __________ memory.
    flash
  • The result of the processing done by the CPU is always stored in _________
    RAM
  • A Motherboard is etched with tiny _____________ _____________ called buses.
    electronic circuits
  • State the full form of LED.
    Light Emitting Diode
  • An inkjet sprays ______________ ink.
    ionized
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