VOCATIONAL EDUCATION

VOCATIONAL EDUCATION.

Sponsored by. NSDC SSA.

VOCATIONAL TRAINING PARTNER.

LEVEL-1 TRADE- IT&ITeS. JOBROLE-DOMESTIC DATA ENTRY OPERATOR.

BASIC ICT.

Generations of Computer. 1 st Generation of computers.

Components of a Computer. A Computer system consists of the following 4 components..

Input Unit. An Input Unit is any device (i.e., a piece of a computer hardware equipment) used to provide data and control signals to an computer..

Keyboard. A keyboard is a typewriter keyboard, which uses an arrangements of buttons or keys to act as mechanical levers or electronic switches. A Keyboard typically has characters engraved or printed on the keys and each press of a key typically corresponds to a single symbol. To produce some symbols require pressing and holding several keys simultaneously. Some keys produce actions or commands to computer..

Layouts of a keyboard. QWERTY DVORAK. Types of keyboard.

Key Types. Alphanumeric Keys (A,B,C,..Z & 0,1,2,…9 & Spacebar).

Pointing Devices. A pointing device is any human interface device that allows a user to input spatial data to a computer. Movements of the pointing device are echoed on the screen by movements of the cursor. Creating a simple, intuitive way to navigate a computer’s GUI..

Mouse. A mouse is a pointing device that functions by detecting two-dimensional motion to its supporting surface. Physically a mouse consists of an object hold under one of the user’s hands with one or more buttons. Type of mouse are, Mechanical Mouse Optical Mouse Inertial and gyroscopic Mouse 3D Mouse Tactile Mouse.

Composite Devices. Input devices, such as buttons and joysticks can be combined on a single device that could be thought of as a composite device. Many gaming devices have controllers like this. Technically mice are composite devices, as they both track movement and provide buttons for clicking but composite devices are generally considered to have more than two different forms of input..

Imaging and Video Devices. Imaging and Video Input Devices are used to digitize images or video from the outside world into the computer. The information can be stores in a multitude of formats depending on the user’s requirement..

Audio Devices. In the fashion of video devices, audio devices are used to either capture or create sound. In some case an audio output device can be used as a input device, in order to capture and produce sound..

Output Unit. An Output unit, is any piece of computer hardware equipment used to communicate the results of data processing carried out by computer to the outside world..