ICT LESSON 4

Trackball

A pointing device that look like an inverted mouse and it consists of a ball held by a socket containing sensors to detect a rotation of the ball about two axes

CCTV (Closed circuit television)

It refers to a video surveillance system where video signals are transmitted to a limited set of monitors

Graphics tablet or drawing tablet

What is the digitizer new name now?

Digitizer

Is a device that converts analog information (like light, sound, or touch) into digital format that a computer can understand

Graphics tablet

Is a device used for creating digital art, illustrations, animation, and other visual content by hand

Input devices

These are devices that allows users to send information to a computer system

Output devices

These are devices used to display and communicate information

Printer

It provides hard copy on documents , it prints text or illustrations on paper

Ink-Jet or Bubble-Jet Printer

it sprays ink at a sheet of paper and produces high-quality text and graphics.

Laser Printer

Uses the same technology as copy machines and produces very high quality text and graphics.

Dot matrix Printer

a type of impact printer that prints using a fixed number of pins or wires and typically use a print head that moves back and forth or in an up-and-down motion on the page and prints by impact

Plotter Printer

a device that receives commands from the computer and then draws its picture on the page

Thermal printer

An inexpensive printer that works by pushing heated pins against heat sensitive paper. are widely used in calculators and fax machines

Light emitting diode (LED)

A display and lighting technology used in almost every electrical and electronic product on the market, from a tiny on/off light to digital readouts, flashlights, traffic lights and perimeter lighting

Liquid crystal display (LCD)

a flat-panel display that uses liquid crystal technology to produce images and produces less heat, have better image quality, and offer a wider viewing angle.

Cathode ray tube (CRT)

-is a vacuum tube containing one or more electron guns, which emit electron beams that are manipulated to display images on a phosphorescent screen

Organic light-emitting diode (OLED)

This monitor is a display technology that uses organic light-emitting diodes to create images.

Plasma

is a type of flat-panel display that uses small cells containing plasma: ionized gas that responds to electric fields

Touchscreen

is a display screen that allows you to interact directly with what is appearing on the screen by touching it

Storage Devices

is a hardware component that allow computers to store and retrieve digital information, including files, program, and the operating system

RAM (Random Access Memory)

Stores data temporarily while the computer is in use.

ROM (Random Only Memory)

is a type of computer memory that stores data permanently. It's non-volatile, meaning it retains its data even when the power is turned off.

Hard Drive

Is a device used to store digital data, typically in the form of text photos, videos and music. It is one of the core components inside of a computer

USB Drive

is a portable device commonly used for storage, data back up and transferring Files between devices

• Also known as Flash drive or Thumb drive

Universal Serial Bus

USB stands for?

memory card

is a portable storage device that is commonly used in electronic devicer such as digital cameras, smartphones, tablets, and gaming consoles.

optical drive

is a computer hardware component that reads and writer data to and from optical dive like CDs, DVDS and Blur ray discs, using a laser to interact with the disc's surface system

Bar code reader, keyboard, joystick, optical pen, scanner, mouse, microphone

Types of input devices

CPU, GPU, motherboard, network card, sound card

Types of process devices

Process devices

are the hardware components within a computer that interpret and manipulate data, enabling the execution of instructions and the performance of various tasks

Floppy disc, memory card, hard disk drive, usb flash drive

Types of storage devices

Headset, speakers, headphone, monitor, printer, plotter, projectors, fax machine,

Types of output devices

Storage devices

A hardware device which can be used to store digital data and applications which may be in the form of images, video, audio

Digital camera, CD/DVD, Webcam, Modem, Touchscreen

Types of input/output devices

input/output devices

Devices that can both send and receive data