I.C.T.

The Computer System

Computer System …Procedures and protocols

Computer System …uses Data and Information

Computer System …follows Data Processing System

Data Processing System INPUT PROCESS OUTPUT STORE

…components of CS  Hardware  Software  Peopleware /Users  Data

Hardware

…tangible component

Hardware …electronic devices

Hardware

..classification InputProcessor OutputMemory Input/OutputSecondary Storage

Input ….accepts data

Input  Keyboard  Pointing Device  Optical Input Device  Alternative Input Devices

Keyboard

Pointing Device

Mouse

Mechanical Mouse

Mouse Mechanical Mouse

Mouse Optical Mouse

Mouse Wireless Mouse

Mouse Wireless Mouse

Trackball

…stationary Trackball

Touch Pad

Moving Area

Touch Pad..tap

Touch Pad Left Click

Touch Pad Right Click

Track Point

Light Pen

…Graphic Pen

Light Pen …Stylus

Optical Input Device …uses lens and light

Scanner …bounce back light

Barcode Reader

…Handheld

Barcode Reader …Flatbed

Barcode Reader …groceries

Alternative Input Devices

Microphone …analog to digital sound

Controllers Game Pad

Controllers Joy Stick

Controllers …used for simulations

Keypads

Biometric Technology Alternative way to identify the identity of an input sample

Biometric Technology …alternative way to identify the identity of an input sample

Output ….produces information

Output  Monitor  Printer  Alternative Output Devices