Input and Output Devices Question and Answers | Basic Computer Knowledge

1.

What type devices are computer speakers or headphones?

   A.) Input
   B.) Input/Output
   C.) Software
   D.) Output

Answer: Option 'D'

Output

2.

An example of peripheral equipment is

   A.) CPU
   B.) printer
   C.) ALU
   D.) spreadsheet

Answer: Option 'B'

printer

3.

The transfer of data from a CPU to peripheral devices of computer is achieved through

   A.) interfaces
   B.) buffer memory
   C.) modems
   D.) I/O ports

Answer: Option 'D'

I/O ports

4.

Which of these is a pointing and drop device?

   A.) Scanner
   B.) Mouse
   C.) Printer
   D.) CD-Rom

Answer: Option 'B'

Mouse

5.

Which is the best position for operating the mouse?

   A.) Tail away form the user
   B.) Tail towards the user
   C.) Tail facing the right
   D.) Tail facing the left

Answer: Option 'B'

Tail towards the user

  • Important - Bits

    * Enter key is an alternative to press OK button.
    * Shift key is used in combination with other keys. So this is also called

    Combination key.

    * Caps lock and num lock keys are called as 'toggle keys' because when pressed, they toggle or change their status from one state to another.
    * Numeric keypad is used only, when the num lock key is in active state.

6.

Which of the following produces high-quality output?

   A.) Impact printer
   B.) Non-impact printer
   C.) Plotter
   D.) Both '1' and '2'

Answer: Option 'B'

Non-impact printer

7.

Laser printers belong to

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

Answer: Option 'B'

page printer

8.

First computer mouse was built by

   A.) Douglas Engelbart
   B.) Robert Zewacki
   C.) William English
   D.) Oaniel Coogher

Answer: Option 'C'

William English

9.

External devices such as printers, keyboards and modems are known as

   A.) add on devices
   B.) PC expansion slot add-ons
   C.) peripherals
   D.) special buys

Answer: Option 'C'

peripherals

10.

A parallel port is most often used by a

   A.) printer
   B.) monitor
   C.) mouse
   D.) external storage device

Answer: Option 'A'

printer

11.

Which of the following groups consists of only input devices?

   A.) Mouse, Keyboard, Monitor
   B.) Mouse, Keyboard, Printer
   C.) Mouse, Keyboard, Plotter
   D.) Mouse, Keyboard, Scanner

Answer: Option 'D'

Mouse, Keyboard, Scanner

12.

USB refers to

   A.) a storage device
   B.) a proccessor
   C.) a port type
   D.) a serial bus standard

Answer: Option 'C'

a port type

  • 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

13.

The pattern of printed lines on most products are called

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

Answer: Option 'D'

bar code

14.

________ 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

  • MIDI Devices

    * MIDI (Musical Instrument Digital Interface) is a system design to transmit information between electronic musical instruments.

    Trackball

    * The trackball is sort of like an upside-down mouse, with the ball located on top.
    * You use your fingers to roll the trackball, and internal rollers (similar to what

15.

The OCR recognises the _______ of the characters with the help of light source.

   A.) size
   B.) shape
   C.) colour
   D.) used ink

Answer: Option 'B'

shape

16.

Which key is used in combination with another key to perform a specific task?

   A.) Function
   B.) Space bar
   C.) Control
   D.) Arrow

Answer: Option 'C'

Control

17.

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

18.

Which of the following is not a hardware?

   A.) Processor chip
   B.) Printer
   C.) Mouse
   D.) Java

Answer: Option 'D'

Java

19.

What are the units used to count the speed of a

   A.) CPM
   B.) DPI
   C.) PPM
   D.) BIT

Answer: Option 'B'

DPI

  • Input Devices

20.

In MICR, C stands for

   A.) code
   B.) colour
   C.) computer
   D.) character

Answer: Option 'D'

character


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