2 :- New advanced printer is developed in such a way that they do not strike ribbon against. Paper to produce the image. Such printers are called Non-impact printers. These printers use different technologies under the control of computer to produce the images; the most common Non-impact printer technologies are laser technology, ink-jet technology, and thermal technology. The printer are named the after the technology that are employed by them to produce in printing sharp graphic images. All Images printers can produce multiple copies by using carbon paper but Non-impact printers can produces only one printout at a time.
A) Ink jet printer :- This printer work with ink. This printer contains a nozzle in which ink and is connected. When the nozzle throws ink on the paper an electro-magnetic field is made on the paper and ink is spread in paper on the shape of electro-magnetic field. This is much cheaper than the laser up gradable to the colour printer. Now a day these printers are more popular because of its cast and the versatility.
B) Laser printer :-In the laser printer, laser light is used to produce the image on paper. It contains a drum coated with photosensitive material . The laser beam is focused on this rotating drum under the control of the computer to produce the image on it in the form of electrostatic charges. A toner (ink) is applied to the drum.
The toner particles are attracted by the impression of the ink is created on the paper. In order to make this ink impression permanent the heat and pressure is applied on the paper by passing it through a hot roller. Laser printers are used to produce high quality output. Various laser printers having capacity to print 5 to 20 pages per minute are available in the market.
Plotter :- This is output device as same as the printer but it can give the output in large size. The speed of the plotter is not much high but the accuracy is much more. It is generally use in engineering work. It can print big graphs, design, and illustrations under the control of computer to which it was link. Many create graphics on paper, which cost much less than having them produce commercially.
Speaker :
It is used to hear the recorded sound, it converts the signal store in computer into audio signal Computer also produce sound output, ranging from simple beeps alerting the user, to impressive game sound effects, to connect quality music. The circuitry produce sound may be included in the motherboard, but high quality audio output from a PC usually requires a sound card input one of the expansion slots connection to a set of good quality external speakers or headphones,
Surface Computing :
Microsoft Surface is a touch -based graphical user interface. The system is composed of a horizontal touch screen under a coffee table -like surface, with cameras mounted below to detect the used interaction. All interface components such as dialogs , mouse pointer and windows, are replaced with circles and rectangle outlining "objects " that are manipulative via drag and drop. The "objects " in question can be either virtual on the screen. Physical objects such as cell phone I cameras, and PDAs placed on the screen. Physical objects are automatically identified and connected to the Surface computer upon their placement o screen
A) Ink jet printer :- This printer work with ink. This printer contains a nozzle in which ink and is connected. When the nozzle throws ink on the paper an electro-magnetic field is made on the paper and ink is spread in paper on the shape of electro-magnetic field. This is much cheaper than the laser up gradable to the colour printer. Now a day these printers are more popular because of its cast and the versatility.
B) Laser printer :-In the laser printer, laser light is used to produce the image on paper. It contains a drum coated with photosensitive material . The laser beam is focused on this rotating drum under the control of the computer to produce the image on it in the form of electrostatic charges. A toner (ink) is applied to the drum.
The toner particles are attracted by the impression of the ink is created on the paper. In order to make this ink impression permanent the heat and pressure is applied on the paper by passing it through a hot roller. Laser printers are used to produce high quality output. Various laser printers having capacity to print 5 to 20 pages per minute are available in the market.
Plotter :- This is output device as same as the printer but it can give the output in large size. The speed of the plotter is not much high but the accuracy is much more. It is generally use in engineering work. It can print big graphs, design, and illustrations under the control of computer to which it was link. Many create graphics on paper, which cost much less than having them produce commercially.
Speaker :
It is used to hear the recorded sound, it converts the signal store in computer into audio signal Computer also produce sound output, ranging from simple beeps alerting the user, to impressive game sound effects, to connect quality music. The circuitry produce sound may be included in the motherboard, but high quality audio output from a PC usually requires a sound card input one of the expansion slots connection to a set of good quality external speakers or headphones,
Surface Computing :
Microsoft Surface is a touch -based graphical user interface. The system is composed of a horizontal touch screen under a coffee table -like surface, with cameras mounted below to detect the used interaction. All interface components such as dialogs , mouse pointer and windows, are replaced with circles and rectangle outlining "objects " that are manipulative via drag and drop. The "objects " in question can be either virtual on the screen. Physical objects such as cell phone I cameras, and PDAs placed on the screen. Physical objects are automatically identified and connected to the Surface computer upon their placement o screen
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