department of computer science information technology
TRANSCRIPT
Department Of Computer Department Of Computer ScienceScience
Information TechnologyInformation Technology
Presented Presented ToTo
Respected Sir Imdad UllahRespected Sir Imdad Ullah
Presented Presented ByBy
Nosheen Shoukat BS-IT-41Nosheen Shoukat BS-IT-41Muhammad Tayab BS-IT-49Muhammad Tayab BS-IT-49Ramsha Mukhtar BS-IT-36Ramsha Mukhtar BS-IT-36Meha Shahid BS-IT-16Meha Shahid BS-IT-16Haroon Saeed BS-IT-21Haroon Saeed BS-IT-21Izhar Ahmad BS-IT-33Izhar Ahmad BS-IT-33Naeem Sheikh BS-IT-18Naeem Sheikh BS-IT-18
INPUTINPUT
Data or instruction given to Data or instruction given to computer by user.computer by user.
Signals received by computer Signals received by computer before processingbefore processing
Audio inputAudio inputVideo inputVideo input
Input DevicesInput Devices
Devices used to enter data into computerDevices used to enter data into computerDevices which help computer to receive Devices which help computer to receive
data by user before processingdata by user before processing Examples:Examples: KeyboardKeyboard MouseMouse Joy sticksJoy sticks Digital cameraDigital camera
KeyboardKeyboard
Most commonly used Most commonly used input deviceinput device
Buttons are called Buttons are called keyskeys
Examples:Examples: QWERTY KeyboardQWERTY Keyboard Enhanced Enhanced
KeyboardKeyboard Cordless keyboardCordless keyboard Portable KeyboardPortable Keyboard
MouseMouse
Small and Small and lightweightlightweight
It has only two or It has only two or three buttonsthree buttons
Examples:Examples: Mechanical mouseMechanical mouse Optical mouseOptical mouse Wireless/cordless Wireless/cordless
mousemouse
Joy StickJoy Stick
It consists of base and stickIt consists of base and stick
Base consists of buttons to perform Base consists of buttons to perform taskstasks
Stick used to control the cursorStick used to control the cursor
Digital Camera Digital Camera
Used to store Used to store imageimage
Allows user to edit Allows user to edit imageimage
Types of cameraTypes of camera
Studio CameraStudio Camera Field CameraField Camera Point-and-shoot CameraPoint-and-shoot Camera
Pen InputPen Input
It look like small tiny ink penIt look like small tiny ink pen Uses pressure instead of inkUses pressure instead of ink Digital Pen, StylusDigital Pen, Stylus
Touch ScreenTouch Screen
Touch sensitive DeviceTouch sensitive Device It works by touching the area of It works by touching the area of
screenscreen
OUTPUTOUTPUT
Information received by user from Information received by user from computercomputer
Signals which user gets after Signals which user gets after processingprocessing
Soft copy output (shown on screen)Soft copy output (shown on screen) Hard copy output (printed on paper)Hard copy output (printed on paper)
Output DevicesOutput Devices
Devices used to display informationDevices used to display information
to the userto the user
Devices that help user to receive Devices that help user to receive information by computer after processinginformation by computer after processing
MonitorMonitor PrinterPrinter SpeakersSpeakers ProjectorProjector
PrinterPrinter
A printer prints A printer prints characters, characters, symbols and symbols and graphics on papersgraphics on papers
Used in business to Used in business to print documentsprint documents
Printed output is Printed output is called hard copy called hard copy
Types Of PrintersTypes Of Printers
Impact PrintersImpact Printers
Non-impact printersNon-impact printers
Types Of Impact PrinterTypes Of Impact Printer
Dot matrix PrintersDot matrix Printers
Line PrintersLine Printers
Daisy wheel Printers Daisy wheel Printers
Dot matrix PrinterDot matrix Printer
It is impact printerIt is impact printer
Produces printed images when tiny Produces printed images when tiny pins strike inked ribbonpins strike inked ribbon
It uses 100 to 150 DPIIt uses 100 to 150 DPI
200 to 300 character per minute 200 to 300 character per minute
Line PrinterLine Printer
Fast impact printerFast impact printer Its speed measured in line per Its speed measured in line per
minute (some printer print 3000 line minute (some printer print 3000 line per minute)per minute)
TypesTypes
Band printerBand printer
Chain printerChain printer
Daisy Wheel PrinterDaisy Wheel Printer
Similar to typewriterSimilar to typewriter
Uses print wheel called daisy wheelUses print wheel called daisy wheel
Types Of Non-Impact PrinterTypes Of Non-Impact Printer
Inkjet PrintersInkjet Printers Laser PrintersLaser Printers Photo PrintersPhoto Printers
Inkjet PrinterInkjet Printer
It prints by spraying tiny drops of It prints by spraying tiny drops of liquid ink on paperliquid ink on paper
It can print 1 to 6 pages per minuteIt can print 1 to 6 pages per minute It is inexpensiveIt is inexpensive
Laser PrinterLaser Printer
It creates images on paper by laser It creates images on paper by laser beambeam
LASER stands for Light Amplification LASER stands for Light Amplification Emission Of RadiationEmission Of Radiation
Density of these dot ranges from 300 Density of these dot ranges from 300 to 2000 dots per inchto 2000 dots per inch
It is also called Page PrinterIt is also called Page Printer
Photo PrintersPhoto Printers
It is color printerIt is color printer
Also called Snapshot printerAlso called Snapshot printer
Specially designed to print high quality Specially designed to print high quality photographsphotographs
Some photo printers have built-in LCD Some photo printers have built-in LCD color screencolor screen
MonitorMonitor
Most commonly used Most commonly used output deviceoutput device
Output on monitor is Output on monitor is called soft copycalled soft copy
SpeakersSpeakers
Produces audio outputProduces audio output
Speakers produce music, speech or Speakers produce music, speech or other sound like beepother sound like beep
ProjectorsProjectors
It projects the output It projects the output of computer screen of computer screen on a larger screenon a larger screen
It is used to deliver It is used to deliver lecture to many lecture to many students in classstudents in class
ThanksThanks