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Direction : Study the following question carefully and choose the right answer.
» Explain it
D
An output device is any piece of computer hardware item used to communicate the results of data processing carried out by an information processing system which converts the electronically generated information into human-readable form. 

Plotter: It’s a computer printer for printing vector graphics. Earlier, plotters were used in applications such as computer-aided design, though they have generally been replaced with wide-format conventional printers. A plotter gives a hard copy of the output. It draws pictures on a paper using a pen. Plotters are used to print designs of ships and machines, plans for buildings and so on.

Printer: It is a device that accepts text and graphic output from a computer and transfers the information to paper.

Monitor: It is a display screen used to provide visual output from a computer.
» Explain it
D
An input device is a peripheral (piece of computer hardware equipment) used to provide data and control signals to an information processing system such as a computer or information appliance. Examples of input devices include keyboards, mouse, scanners, digital cameras and joysticks.
» Explain it
A
Printed data on a paper or other object is called hardcopy.
4
Which of the following is an output device?
» Explain it
D
An output device is any piece of computer hardware item used to communicate the results of data processing carried out by an information processing system (such as a computer) which converts the electronically generated information into human-readable form. So, Monitor and Printer are output devices.

Monitor: It is a display screen used to provide visual output from a computer.

Printer: It is a device that accepts text and graphic output from a computer and transfers the information to paper.
5
What is a function of a keyboard in computer?
» Explain it
B
A computer keyboard is an input device used to enter characters and functions into the computer system by pressing buttons, or keys. It is the primary device used to enter text. A keyboard typically contains keys for individual letters, numbers and special characters, as well as keys for specific functions. A keyboard is connected to a computer system using a cable or a wireless connection.