input and output hardware ms. fojan’s class. group members mr. nafees ahmed khan mr. yasir munawar
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Input and Output Hardware
Ms. Fojan’s Class
Group Members
• Mr. Nafees Ahmed Khan• Mr. Yasir Munawar
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
Linking People and Hardware
People enter data through Input Hardware and then receive results of processing through Output Hardware.
Input Devices
Devices use to enter data in computer
It includes devices :– Keyboard– Pointing Devices– Scanners– Microphone
Keyboard
Every Computer contains Keyboard
Looks like a typewriter
Most widely used
Inputs letters, numbers and other symbols
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
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
Other Input Devices
Touch Sensitive Screen
Digital Camera
Sensors
Credit Card Readers
Output Devices
Devices that gives out result of the entered data
Three Categories:– Permanent Output– Temporary Output– Action Output
Permanent Output Devices
Computer processed information in the form of printed documents, drawings and microfilms
It includes:Printers:Plotters
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
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
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
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
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