"Output Devices of Computer" কম্পিউটারের আউটপুট ডিভাইস

"Output Devices of Computer" কম্পিউটারের আউটপুট ডিভাইস

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  Output Devices Presentedto: Md. Samiullah, Lecturer, CSE, DU Presented by: Sakline Zubair Sifat (2014-2-10-174) & Mahadi Hasan Rume (2013-10-225)
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  Flow of contents Introduction to Output device List of some output device Describe about them Conclusion
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  Introduction to Outputdevice • Electronic or electromechanical equipment connected to a computer and used to transfer data out of the computer in the form of text, images, sounds, or other media • A system that provides the user with visual, tactile or auditory feedback • Translate the data processed by the computer into a format that people can understand , appreciate and work with(E.g. in vedio, text, image
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  List of someOutput devices Monitor Printer Speaker
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  Monitor Monitor isan output device that visually conveys text, graphics, and video information. Information shown on a display device is called soft copy because the information exists electronically and is displayed for a temporary period of time
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  Monitor 2/4 Generallythere are tow types of monitor. 1. CRT (Cathode ray tube) & 2. Flat-panel display. Like:LCD, LED etc
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  Monitor 3/4 Mechanism •Electron gun shoots streams of electrons at a high voltage towards the screen •Magnetic coil controls the flow of electrons •Phosphor dots on the back of the screen glow when the electron beam hit them •Electron gun do not scan it randomly but in a designed fashion •The electron gun scans from left to right •Then from top to bottom •Refreshing every phosphor dot in a zigzag pattern
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  Monitor 4/4 Mechanism: Scanning left right top bottom Indicates pixel
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  Printer The printeris a device that print text document and images on paper It is a peripheral output device. Printers can be classified in two group-impact printers and non-impact printers
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  Printer 2/3 Thereare different types of printers. 1. Dot-Matrix. 2. Inkjet 3.Laser Printer
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  Printer 3/3 •Dot-MatrixPrinter Dot-Matrix printers are character printer that print one character and all kind of images as patterns of dots. •Inkjet Ink jet printers are character printers that form characters and all kinds of images by spraying small drops of ink on a paper. •Laser Printer The Laser Printer uses a beam of leaser for the purpose of printing and it is consists of a revolving cylinder that is made up of photoconductive material
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  Speaker A speakersystem converts an electrical signal to sound.
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  Speaker 2/3 Moreabout speaker Speaker is well known output device usually outputs sound It is attached with the sound card of the computer Sound can be controlled by controller Electric signal is converted and it changes the air pressure outside which we call sound
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  Speaker 3/3 Speakersare connected directly to a computer, its uses are: Used to output sound from multimedia presentetions Used in home entertainment centers Can help blind people Play downloud sound files
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  Without output devicesthe user cannot experience the image ,sound, color & visibility of the data. Tip: Keep in mind that drives such as a CD-ROM, DVD, and a Floppy diskette drive may be capable of sending the computer information, but they are not output devices. These are considered storage devices.
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  Thanks for yourPatience CSE-101, Sec-09 (FALL 2014)
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  Created by SaklineZubair Sifat (BeyonD)-1Dec2014{1:48am} www.fb.com/beyondszs beyondsifat@asia.com szsifat@gmail.com