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Output Devices
An output device is a physical component that converts the processed data or information into a human readable
format.
Some of the commonly used output devices are:
Monitor (Visual Display Unit)
Monitor is a standard output device that is similar to a television screen. It is also
known as Visual Display Unit (VDU) or console. An input from any input device such
as a keyboard can be seen on the screen simultaneously. There are different types of
monitors available in the market depending on the size and color.
These days the most widely used monitors in computers, tablets, smartphones, Smart
TV, etc. is LCD (Liquid Crystal Display). Its screen is made up of smaller elements called
pixels. Resolution of any display unit is the number of horizontal and vertical pixels.
A higher resolution provides a smoother, sharper, clearer image. Monitor
Printer
A printer is an output device that is used to get the output on a physical medium like paper. The output on the
screen is called a soft copy whereas the output from the printer is called a hard copy. It can be used to print both
text and graphics. The two most common types of printers used these days are inkjet and laser printers.
Inkjet Printer
Inkjet printers are also called photo printers. They are used to print both in
colored or black & white format for home or small business purposes. The speed
of an ink-jet printer is measured by the number of Pages Per Minute (PPM).
Mostly ink-jet printers print from 12 to 36 pages per minute.
Inkjet Printer
Laser Printer
A laser printer works just like a photocopy machine that prints the output at high-
speed and good quality. It creates images using a laser beam and powdered ink
called toner. It is more expensive than inkjet printers and can be used for home or
business purposes.
Laser Printer
Plotter
A plotter is an output device similar to a printer but used to print vector graphics
like architectural designs, maps, computer aided drawings etc. by plotting lines
using a pen. A printer uses a technology of joining closely spaced series of
small dots to print whereas a plotter draws using a pen. Multicolor plotters use
different-colored pens to draw in different colors.
Plotter
Speakers
Speakers are an output device that produce sound waves in the form of an output
which can be heard by a listener. Speakers can be attached to a computer or to
any other system like smartphones, tablets, Smart TV, etc. to enhance the volume
and the quality of audio output. The different kinds of speakers range from simple,
two-speaker output devices to surround-sound multi-channel units. Speakers
ICT Skills-I 61

