Input output hardware
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Input and Output Hardware
Chapter No.6
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Group Members
• Mr. Nafees Ahmed Khan• Mr. Yasir Munawar
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Hardware
The bodily object of a Technology
The Physical Components of a Computer
Some are connected by software while the others are plug-n-play
It include:– Input Devices– Output Devices
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Linking People and Hardware
People enter data through Input Hardware and then receive results of processing through Output Hardware.
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Input Devices
Devices use to enter data in computer
It includes devices :– Keyboard– Pointing Devices– Scanners– Microphone
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Keyboard
Every Computer contains Keyboard
Looks like a typewriter
Most widely used
Inputs letters, numbers and other symbols
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Pointing Devices
The motion of movement of pointing devices is converted to similar movement on a monitor
It includes :– Mouse – Track ball– Joystick– Light Pen
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Scanners
Scanners allow input of printed data
Reads text, photographs and graphics
Process of Scanning: – It converts data into light and dark picture element or pixels
Types of Scanners– Flatbed Scanner– Handheld Scanner– Color Scanner
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Other Input Devices
Touch Sensitive Screen
Digital Camera
Sensors
Credit Card Readers
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Output Devices
Devices that gives out result of the entered data
Three Categories:– Permanent Output– Temporary Output– Action Output
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Permanent Output Devices
Computer processed information in the form of printed documents, drawings and microfilms
It includes:Printers:Plotters
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Printers
It gives hard copy to the organization for routine business correspondence , billing and accounting information
For example : Architects use to compute budget
Types of Printers:– Impact Printers
– DeskJet– Dot matrix
– Non Impact Printers– Laser Printer– Electrostatic Printer
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Plotters
It gives output in the form of graphs, maps, charts and drawings
For example: Artist uses plotters for the different sketches
Types of Plotters:Flatbed PlottersDrum Plotters
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Temporary Output Devices
Video displays and audio responses
Also provide output for immediate temporary use
Includes:– Video Display Output
– CRT (Cathode Ray Tube) Monitor– Flat screen
– Speech synthesizer
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Action Output Devices
Consist of processing data to initiate some form of movement or process to control activity
Types of Action Output:Computer Numerical Control (CNC) MachineComputer Aided Machine (CAM)Robotics