Information Technology Unit 1

Digital device

An electronic device that uses binary data (1s and 0s) to process and store information.

Analogue data

Data represented by continuous values, such as sound waves or physical measurements.

Multifunctional device

A device that can perform multiple functions, such as printing, scanning, and copying.

Touch screen

A display that allows users to interact with a device by touching the screen directly.

Personal computer

A small and affordable computer designed for individual use, such as a desktop or laptop.

Mobile device

A portable device, such as a smartphone or tablet, designed for on-the-go use.

Server

A powerful computer that provides services to other computers connected to a network.

Entertainment system

A device for watching TV shows, movies, listening to music, and playing video games.

Digital camera

A device that captures images and videos digitally using an image sensor.

Navigation system

A device that uses GPS to determine the user's location on a digital map and provide directions.

Communication device

A device that can send and receive data to and from other devices.

Data capture and collection system

A device that automatically collects and inputs data, eliminating the need for manual entry.

Input device

A peripheral device used to enter data into a computer system, such as a keyboard or mouse.

Output device

A peripheral device used to display or produce data from a computer system, such as a monitor or printer.

Keyboard

An input device consisting of keys used to enter alphanumeric characters and symbols.

Mouse

An input device used to select items on a computer screen by moving a cursor.

Scanner

An input device that converts physical documents or images into a digital format.

Graphics tablet

An input device that allows users to control a computer by using a stylus on a tablet-like surface.

Microphone

An input device that converts sound waves into electrical signals for the computer to process.

Webcam

An input device that captures video and still images directly into a computer.

Monitor

An output device that displays images or documents to the user.

Projector

An output device that projects images onto a wall or screen.

Printer

An output device that produces hard copies of digital documents and images on paper.

Plotter

A specialized printer that draws high-quality graphics on large paper.

Speakers

Output devices that amplify sound waves for the user to hear.

Headphones

Portable alternative to speakers for personal audio output.

Accessibility device

A peripheral device specifically designed to provide accessibility for people with disabilities.

Trackball

An alternative to a mouse that consists of a movable ball on a base.

Touch screen or large key keyboard

A keyboard designed for people who have difficulty using a standard keyboard.

Eye motion sensors and head motion trackers

Devices used by people with limited mobility to control a computer using eye or head movements.

Braille embosser

A printer that outputs text as Braille cells for visually impaired individuals.

Utility software

Software used to manage system resources and optimize computer performance.

Disk utilities

Utilities designed to maintain the performance of a computer's disk drive.

Network utilities

Utilities designed to maintain good network traffic and ensure network security.

File compressors

Utilities that reduce the size of files for storage and sharing purposes.

Backup utilities

Utilities that automate the process of backing up important files for data protection.

Disk defragmenter

A utility that reorganizes data on a disk drive to improve file access speed.

Traceroute

A network utility that displays the path data packets travel over an IP network.

Registry cleaner

A utility that removes old and redundant registry entries to improve system performance.

System profiler

A utility that provides a detailed breakdown of a computer system's hardware and software.

File types

Different file formats used to denote the structure and content of stored data.

JPG

A file format for compressed images with good quality and small file size.

BMP

An uncompressed file format for images with high quality but large file size.

DOC

A file format for documents created using word processing software.

PDF

A file format for documents that can be viewed and printed on any platform.

GIF

A file format for images with small file size but limited colors and quality.

Proprietary software

Software whose source code is privately owned by a company and requires payment to use.

Open source software

Software whose source code is available to read and modify, often free to use.

Artificial intelligence

The simulation of human intelligence in machines that can learn and perform tasks.

Biometrics

The measurement and analysis of unique physical or behavioral characteristics for identification purposes.

Robotics

The design, construction, and use of robots to perform tasks autonomously or with human assistance.

Virtual reality

A computer-generated simulation of a three-dimensional environment that can be interacted with.

Local area network (LAN)

A computer network that covers a small area, such as a home, office, or building.

Wide area network (WAN)

A computer network that covers a large geographical area, such as a country or the world.