2.2 Input and Output Device (Week 5-6) - VOCABULARY Flashcards

A set of vocabulary-style flashcards covering key input and output devices and related technologies from the notes.

Pointing device

A device used to select and manipulate objects, input data, and issue commands to a computer.

Mouse

A common pointing device moved on a flat surface to move a cursor; may use a ball (older) or optical/laser; can be wireless.

Stylus

A pen-like input device used to draw or write on a screen; also called a digital pen; used with handwriting recognition.

Graphics tablet

An external surface used with a stylus to draw input that is transmitted to a computer.

Handwriting recognition

Technology that converts handwritten input into editable text.

Touch screen

A display that accepts touch input to select objects or issue commands.

Scanner

An input device that captures an image of an object and transfers it to a computer as digital data.

Flatbed scanner

A scanner with a glass flatbed surface for placing documents to be scanned.

Portable scanner

A mobile scanner designed for scanning on the go.

3D scanner

A scanner that captures the shape and features of three-dimensional objects.

Integrated scanner

A scanner built into or integrated with another device (e.g., ATMs).

Optical resolution

Quality of scanned images, measured in dots per inch (dpi); higher resolution gives better quality but larger file sizes.

Barcode

A machine-readable code that represents data as a set of bars.

Barcode reader

An input device that reads barcodes.

QR code

A two-dimensional barcode that stores data in a matrix of squares.

UPC

Universal Product Code; a barcode widely used in retail.

ISBN

International Standard Book Number; barcode used on books.

Code 39

A linear barcode that can encode alphanumeric data.

Intelligent mail code

A barcode used in mail processing to identify mail pieces.

RFID

Radio Frequency Identification; technology that stores and transmits data using RFID tags.

RFID tag

A tag containing a small chip and antenna used for identification.

RFID reader

A device that reads RFID tags to identify objects.

OMR

Optical Mark Recognition; reads marks on forms (e.g., exams, ballots) to score data.

OCR

Optical Character Recognition; converts scanned text into editable text.

MICR

Magnetic Ink Character Recognition; reads magnetic ink characters on checks, used in banking.

Biometric reader

A device that captures biometric data (fingerprint, iris, facial features, voice) for authentication.

Biometric data

Physiological or behavioral characteristics used for identification or authentication.

Digital camera

Digital video cameras (camcorders), PC webcams; store images on digital media; used for surveillance, video conferences, etc.

Audio input

The process of entering audio data into a computer.

Voice input

Inputting spoken words and converting them to digital form (via microphone or headset).

Microphone

A device that captures sound for audio input.

Display device

A device that presents visual output to the user.

CRT

Cathode-ray tube display; bulkier, older technology.

Flat-panel display

Thin display technology (LCD/LED/OLED) that replaces CRTs.

LCD

Liquid Crystal Display; uses backlighting to present images.

LED

Light-Emitting Diode display technology; thin, bright, common in displays.

OLED

Organic LED; emits light with organic materials; variants exist (e.g., flexible, transparent, phosphorescent).

IMOD

Interferometric Modulator Display; bright, clear images, even in sunlight; used in some mobile displays.

Plasma display

Display technology that uses plasma gas layers to produce images; often used on large screens.

SED

Surface-Conduction Electron-Emitter Display; many tiny electron guns; bright and with reduced flicker.

Data projector

A projector that displays computer output on a screen or wall; can be wireless or integrated.

Hologram projector

A projector that displays three-dimensional holographic images.

Printer

Device that produces hard copies of documents; varies by technology, speed, color options, and connections.

Laser printer

Printer that uses laser technology and toner to produce images; generally fast and capable of color in modern models.

Audio output

Output of audio signals as sound; typically via speakers or headphones.

Speaker

An audio output device that produces sound.

Headphones

Personal audio output worn over or in the ears.

Headset

Headphones with an attached microphone for two-way communication.

Earphones/Earbuds

Compact personal headphones that sit in or on the ear.