Computers Chapter 7: Input and Output

How many subwoofers would a 7.2 speaker system contain?

2

Data

A collection of unprocessed items, which can includeq texts, numbers, images, audio, and video

Monitor

A display that is packaged as a separate peripheral device

Gesture

A motion you make on a touch screen with the tip of one or more of your fingers or your hand

Software

A series of related instructions, organized for a common purpose, that tells the computer what tasks to perform and how to perform them

Pointer

A small symbol on the screen whose location and shape change as a user moves a pointing device

Touchpad

A small, flat, rectangular pointing device that is sensitive to pressure and motion

Trackball

A stationary pointing device with a ball on its top or side

Nit

A unit of visible light intensity equal to one candela per square meter

LCD displays typically produce color using _________ technology, which uses a separate transistor to supply charges to each liquid display crystal cell

Active-Matrix

Command

An instruction that causes a program or app to perform a specific action

Printer

An output device that produces text and graphics on a physical medium such as paper

Display

An output device that visually conveys text, graphics, and video information

Videoconference

Call in which all parties see one another as they communicate over the Internet

Output

Data that has been processed into a useful form

Another name for a graphics tablet is a(n) _______?

Digitizer

True or false? Contrast ratio defines a display's width relative to its height

False. Differences in light intensity between the brightest white and the darkest black that can be produced on a display. (Change Contact ratio to Aspect ratio)

True or false? The Individuals with Disabilities Education Act (IDEA) requires any company with 50 or more employees to make reasonable attempts to accommodate the needs of physically challenged workers

False. Americans with Disabilities Act (ADA) requires any company with 15 or more employees to make reasonable attempts to accommodate the needs of physically challenged workers

True or false? A data collection device reads and scans from a source document

False. It obtains information directly at the location where the transaction or event takes place

True or false? Most current displays use CRT technology

False. Most current displays use flat panel display

True or false? A smaller frame rate results in a smaller file size for a video, as well as a smoother playback

False. The playback will not be as smooth

True or false? Printer resolution is measure by the number of pixels per inch a printer can print

False. Dots per inch (DPI)

Chip that controls the manipulation and display of graphics on a display device

Graphics Processing Unit

A ________ is an electronic plastic board that detects and converts movements of a stylus or digital pen into digital signals that are sent to the computer.

Graphics tablet

What does HDMI stand for?

High-Definition Media Interface

A(n) ________ is a type of nonimpact printer that forms characters and graphics by spraying tiny drops of liquid ink onto a piece of paper.

Inkjet Printer

Commonly used _____ methods include the keyboard, pointing devices, touch screen, scanners, and reading devices

Input

Keyboard

Input device that contains keys you press to enter data and information into a computer or mobile device

Stylus

Input device that looks like a small ink pen that you can use instead of a fingertip to enter data, make selections, or draw on a touch screen

One or more keyboard keys that you can press to perform an operating system or application related task

Keyboard shortcut

___________ Orientation refers to a printout that is wider than it is tall

Landscape

Scanner

Light-sensing input device that converts printed text and images int a form that the computer can process

Air gestures are used in _______.

Motion input

The United States Postal Service uses the _______ bar code

POSTNET

Nearly all tablets and mobile devices, some laptop screens, and a few desktop monitors have touch screens that support _____ input, in addition to touch input, and thus include a stylus

Pen What is Pen input?

A ________ is a pressure-sensitive pointing device shaped like a pencil eraser that is positioned between keys on a mobile computer keyboard.

Pointing Stick

Mouse

Pointing device that fits under the palm of your hand comfortably

Pressure-sensitive pointing device shaped like a pencil eraser that is positioned between keys on a mobile computer keyboard

Pointing stick

HDTV

Port that combines DVI with high-definition (HD) TV and video

What does QR stand for?

Quick Response

________ is a technology that uses radio signals to communicate with a tag placed in or attached to an object, an animal, or a person.

RFID

A keyboard ______ is one or more keyboard keys that you press to perform an operating system or application-related task.

Shortcut

Input

Term used to refer to data

Resolution

The number of horizontal and vertical pixels in a display device

Which of the following is NOT an example of a pointing device? -Touchpad - Trackball - Touch Screen - Pointing Stick

Touch screen

Input device that contains buttons and/or wheels you operate with a thumb or other finger

Touch-sensitive Pad

True or false? CAPS LOCK and NUM LOCK are examples of toggle keys

True

True or false? Every electronic device emits some level of radiation

True

True or false? It is important to exercise caution when using QR codes because they may direct your mobile computer or optical readers

True

True or false? Kiosks are designed to endure a high volume of use and can be used by hundreds of people per day

True

True or false? Motion input is used by the military for flight simulation and weapons training

True

True or false? Optical character recognition (OCR) and optical mark recognition (OMR) are two technologies used by optical readers

True

A _____________ is an instruction a user issues by responding to a message displayed by a program or app

User Response

A ________ is an instruction a user issues by responding to a message displayed by a program or app

User response

A(n) ________ is a type of DV camera that enables you to capture video and still images, and usually audio input, for viewing or manipulation on a computer or mobile device.

Webcam

A(n) _______ keyboard has a design that reduces the chance or wrist and hand injuries

ergonomic

CAPS LOCK and NUM LOCK are examples of ________.

toggle keys