OUTPUT DEVICES in Computer......!!!The devices which are used to display the data to the user either in the form of hard copy or soft copy are called output devices.

SPEAKERS : Speakers receive the sound in the form of electric current from the sound card & convert it to sound format. These are used for listening music, chatting , seminars for presentations etc. VDU (Visual Display Unit) : This is also called monitor. It is used to get the data in the form of soft copy. Their functioning is exactly similar to the television. It contains a CRT which emits the electrons to trace a regular pattern of horizontal lines on the screen. PRINTER These devices gives the hard copy of the output. These are in different types. Impact - Have mechanical contact in between paper & printing head Non Impact - No mechanical contact between paper & printing head IMPACT : Line Printers - print line wise (E.g. Drum Printer) Character Printer - print character wise (E.g. Daisy Printer) NON IMPACT - Electromagnet Printers : Thermal Printers : Electrostatic Printers : Inkjet Printers: Laser Printers: LCD (Liquid Crystal Display): These screens are used in laptops & notebook sized PCs. A special type of liquid is sandwiched between two plates. The top plate is clear & bottom plate is reflective. The molecules in these liquids are normally aligned & the computer signals are used to align these molecules