A machine-readable code that represents data as a set of bars.
An input device that reads barcodes.
A display device that projects images onto a display screen using a technology similar to the one used with conventional TVs.
An input device that takes pictures and records them as digital data (instead of film or videotaped) images.
An output device that contains a viewing screen.
A display device built into a notebook computer, handheld PC, or other device.
An input device that is used to write electronically on the display screen; also called a stylus or digital pen.
An input device that scans flat objects one at a time.
panel display -A slim type of display device that uses electronically charged chemicals or gases instead of an electron gun to display images.
A flat, rectangular input device that is used in conjunction with a stylus to transfer drawings, sketches, and anything written on the device to a PC in graphic form.
A small, handheld optical scanner.
jet printer -An output device that sprays droplets of ink to produce images on paper.
An input device that resembles a car's gear shift and is often used for gaming.
An input device containing numerous keys, arranged in a configuration similar to that of a typewriter, that can be used to input letters, numbers, and other symbols.
An output device that uses toner powder and technology similar to that of a photocopier to produce images on paper.
Liquid crystal display
A type of flat-panel display that uses charged liquid crystals to display images.
A display device for a desktop PC.
A common pointing device that the user slides along a flat surface to move a pointer around the screen and clicks its buttons to make selections.
Optical character recognition (OCR)
The ability of a scanning device to recognize handwritten or typed characters and convert them to electronic form as text, not images.
The smallest colorable area in an electronic image, such as a scanned document, digital photograph, or image displayed on a display screen.
A type of flat-panel display that uses layers of gas to display images; most often used on large displays.
An output device that produces output on paper.
Radio frequency identification (RFID)
A technology used to store and transmit data located in RFID tags.
A device containing tiny chips and radio antennas that is attached to objects that will be identified using RFID technology.
An input device that reads printed text and graphics and transfers them to a computer in digital form.
Output devices that produce sound.
A small rectangular-shaped input device, often found on notebook computers, that is touched with the finger or thumb to control an onscreen pointer and make selections.
A display device that is touched with the finger to issue commands or otherwise generate input to the connected PC.
An input device, similar to an upside-down mouse, that can be used to control an onscreen pointer and make selections.
Voice input system
A system that enables a computer to recognize the human voice.