Output Device

                           Output Device

• Output Device is any hardware device which generates the output from the computer to human readable form. 

• VDU – Visual Display Unit (Monitor) 

1. The monitor is the most­used output device on a computer. 
2. The monitor provides instant feedback. 
3. Most desktop monitors use a Cathode Ray Tube (CRT), while portable computing devices such as laptops incorporate Liquid Crystal Display (LCD), Light­Emitting Diode (LED), gas plasma or other image projection technology. 

• Printers 

1. Printers are used to transfer the data and the processed information from computer onto a paper. 
2. Information printed on a paper is called the hardcopy of the output. 
3. Printers are capable of printing text and images. 
4. Today, there are colour printers and gray scale (black and white) printers available. 

• Speakers 

1. The speakers, depending on the model have a set of controls including volume, treble and bass. 
2. Apart from this, there is also another speaker that comes along with the computer known as System Speaker, which is responsible for generating the beep sounds.

•  Projector 

1. A Projector is a device designed to take an image from a video source and project a larger version of it as faithfully as possible onto a screen or other surface. 
2. Projectors are used in a variety of different ways; they are enjoyed by home theater enthusiasts due to their ability to project movies and television programs onto a screen much larger than even the biggest TV available, and used in the corporate setting to project information onto screens large enough for rooms filled with people to see. 
3. Projectors come in a variety of different shapes and sizes and are produced by many different companies.