Input and Output Devices Question and Answers | Basic Computer Knowledge

26.

________ printer cannot print more than one character at a time.

   A.) Line
   B.) Daisy - wheel
   C.) Laser
   D.) Dot matrix

Answer: Option 'D'

Dot matrix

27.

You can use the tab key to

   A.) move a cursor acrose the screen
   B.) indent a paragraph
   C.) move the cursor down the screen
   D.) Both '1' and '2'

Answer: Option 'B'

indent a paragraph

  • Hardware

    * Computer hardware is what you can physically touch includes the computer case, monitor, keyboard, and mouse.
    * It also includes all the parts inside the computer case, such as the hard disk drive, motherboard, video card, and many others.

    Input Devices

    * In computing, an input device is a peripheral (piece of computer hardware equipment) used to provide data and control signals to an information processing system.
    * It will control devices such as a computer or information appliance.
    Examples: keyboards, mice, scanners, digital cameras and joysticks.

    Keyboard

    * A Keyboard is the most fundamental input device for any computer system.
    * It helps to enter data in the computer

    Mouse

    * A mouse is used to input data by sending a signal to the computer, based on hovering the cursor and selecting with the left mouse button.
    * The left mouse acts as an

28.

The pattern of printed lines on most products are called

   A.) prices
   B.) OCR
   C.) scanners
   D.) bar code

Answer: Option 'D'

bar code

29.

The rate at which scanning is repeated in a CRT is called

   A.) refresh rate
   B.) resolution
   C.) pitch
   D.) bandwidth

Answer: Option 'A'

refresh rate

30.

Laser printers belong to

   A.) line printer
   B.) page printer
   C.) band printer
   D.) dot matrix printer

Answer: Option 'B'

page printer

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