SHRISTI PPT

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INPUTDEVICESA PRESENTATION BY

SHRISTI KESHARIMBA 1STSEM
http://images.google.co.in/imgres?imgurl=http://www.beyondcomputing.info/Images/scanner.jpg&imgrefurl=http://www.beyondcomputing.info/facilities1.html&usg=__QDA0GksGn63H65wB-GOwMDNtQEE=&h=276&w=359&sz=16&hl=en&start=17&um=1&tbnid=6QDg6vc-UTqu7M:&tbnh=93&tbnw=121&prev=/images?q=3d+scanner&hl=en&rlz=1T4GGLL_enIN315IN315&sa=G&um=1http://images.google.co.in/imgres?imgurl=http://www.buymebuyme.com/retail/product_image.php?imageid=2086&imgrefurl=http://www.buymebuyme.com/retail/customer/product.php?productid=45379&usg=__K_LL20VYwj64T3TYv7nGgDwRf4A=&h=300&w=300&sz=11&hl=en&start=2&um=1&tbnid=IrYlv2h9peTLkM:&tbnh=116&tbnw=116&prev=/images?q=web+camera&hl=en&rlz=1T4GGLL_enIN315IN315&sa=N&um=1http://www.build-your-own-computer.net/image-files/gaming-input-devices-01.jpghttp://www.justcat.co.za/store/images/input%20logo.jpghttp://en.wikipedia.org/wiki/File:Logitech_Mouse.JPG


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KEYBOARD


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KEYBOARD

The keyboard is a way to input letters ornumbers into different applications orprograms.

Types of Keys:

Alphanumeric keys

Function Keys Navigation keys

Modifier Keys


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Mouse


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Mouse

Can be used only with GUI based O.S.

Eg.Windows Used to navigate, open/close files,

websites.

Main goal is to translate the motion of ourhand into signals that the computer canuse.


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Joystick


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Joystick

Used to move cursor from place to place,and click on various items in programs.

Inputs directional data like a mouse. Moves up-down,left-right.

Mostly used for playing games.


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SCANNER


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SCANNER

Used to copy pictures or other things andsave them as files on the computer.

A light moves slowly over the surface ofthe picture or the object to be scanned.

The colours of the reflected light are

detected and digitised to build up a digitalimage.


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MICROPHONE
http://upload.wikimedia.org/wikipedia/commons/3/38/Optoacoustics_OPTIMIC-1190_wiki.jpg


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MICROPHONE

A microphone, sometimes colloquially called amicor mike, is an acoustic-to-electric transduceror sensor that converts sound into an electrical

signal. Microphones are used in many applications such

as telephones, tape recorders, hearing aids,motion picture production, live and recorded audioengineering, in radio and television broadcasting

and in computers for recording voice, VOIP(voiceover internet protocol), and for non-acousticpurposes such as ultrasonic checking.


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WEBCAM
http://upload.wikimedia.org/wikipedia/commons/c/c5/Logitech_Quickcam_Pro_4000.jpg


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WEBCAM

Mostly used during long distance chatting.

Webcams typically include a lens, an

image sensor, and some supportelectronics .

Video chat isa good example of positiveuse.

Internet privacyis the biggest concern ofwebcams and a major negative point .


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TOUCH SCREEN

A computer display screen sensitive tohuman touch.

Used with information kiosks, computer-based training devices, and systemsdesigned to help individuals having

difficulty using mouse/keyboard.


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BAR CODE SCANNER

A bar code scannerscans a little labelthat has a bar codeon it. Theinformation is thensaved on the

computer. Barcode scanners areused in libraries alot.


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OPTICAL MARK READER

These scanners are capable of recognizinga type of mark made by pencil or pen.

The actual technique used by an OMRdevice for recognition of marks involvesfocusing a light on the page being

scanned and detecting the reflected lightpattern from the marks.

Documents

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