Input output hardware

Input and Output Hardware

Chapter No.6

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