COMPUTER HARDWARE - 5

      2. Output Device :- The devices which are responsible to display output or provide result of processing are called output device.

Some of the output devices are --------

→ Monitor :- It is just like a television set which is also called VDU ( Virtual Display Unit ). It is used to display visual information to the user. Monitors can be are of following types ------

✳️ CRT 

✳️ TFT ( Thin Film Transistor )

✳️ LCD ( Liquid Crystal Display )

✳️ LED

→ Speaker :- It is a device which is used for audio output only.

→ Printer :- It is an output device reach we can have the hard copy of our information on a paper or page. Basic function of printer is to convert soft copy into hard copy.

There are two types of printers ------ 

      1. Impact Printer ( Mechanical Contact ) :- 

     ✳️ Dot Matrix Printer

     ✳️ Character Printer ( Type writer )

     ✳️ Line Printer

      2. Non-Impact Printer ( Good Output Quality ) :- 

     ✳️ Laser Jet Printer ( Toner Black)

     ✳️ Inkjet Printer ( Cartridge Colorful )

        1. Impact Printer ( Mechanical Contact ) :- In this printer there is a mechanical contact between printed head and paper. Impact Printer strike against the ink ribbon and make impression on the paper. There is a metallic or plastic head having pins or symbols or characters.

These printers are noisy and poor in output quality.

        2. Non-Impact Printer ( Good Output Quality ) :- In this printer there is no mechanical contact between printed head and paper. These printers are less noisy than impact printer. 

→ Plotter :- A Plotter is a special kind of output device. It is like a printer because it provides image on paper, but the plotter is typically used to print large format image such as construction drawing, banners and holdings etc.