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 Plotters Drum 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) Machine Computer Aided Machine (CAM) Robotics