Output devices

What is an output device?
An output device is any gadget that receives data from a computer for activities such as displaying and projecting. Monitors and speakers are the most common output devices used with computers.

Monitor
- A display screen used to provide visual output from a computer

Advantage

It is available for most of the computers.

Disadvantage

The older version (CRT) consumes a lot of power.

Speaker
- A device that converts analog audio signals to air vibrations to make audible sound.

Advantage

They are easy to operate.

Disadvantage

They might distract other people from their work.

Headphones
- A pair of earphones joined by a band placed over the head, for listening to music or speech. Advantage

You can listen to music and watch without disturbing other people.

Disadvantage

Long term use is harmful for your ears.



Printers
Advantages

-They produce paper output at a speedy rate.

-It can also be shared by different users in the same network.

Disadvantage

-The cost for maintenance of the printer equipment is high. (e.g. Ink for the printer)


 * Laser printer - A printer that produces printed material by using a laser to form a pattern of electrostatically charged dots.
 * Inkjet printer- A printer which produces printouts formed by minute jets of ink.
 * 3D printer-It is a device that makes three dimensional solid objects from a digital file.

Plotter
- Plotter is an equipment that prints out graphics on a chart.

Advantage

They can produce neat drawings on a piece of paper based on their commands.

Disadvantage

They are more expensive than printers.

They are difficult to use.

Projector
- A projector is used to project rays of light, usually projecting slides or movie onto a screen.

Advantage It can project output to a larger audience compared to monitors.

Disadvantage

They require to be used in dark rooms and a space to project it.

Types of Output devices
Visual (Graphical) - visually conveys text, images, graphics and video information.

Tactile - technology which takes advantages of senses by applying forces, vibration or motion

Audio - speech output devices that reads texts on the screen to the user.

by CHO YE UN