Computers Chapter 7

nonimpact printer

A ___ ___ forms characters and graphics on a piece of paper without actually contacting the paper

laser

A ___ ___ is a non-impact computer that is of high speed and high quality and prints in black and white or color. It processes and stores the entire page before actually printing it

data projector

A ___ ____ is a device that projects the text and images displaying on a computer or mobile device screen so that an audience can see an image clearly. (found in classrooms at NW)

QR code (quick response code)

A ___ ____ stores information in both a vertical and horizontal direction. Square shaped graphics that correspond to a web address or other information. aka 2-D bar code can be read with a bar code reader or an app on a mobile device

3-D printer

A ___ ____ uses a process called additive manufacturing to create an object by adding material to a three-dimensional object, one horizontal layer at a time

mobile

A ___ printer is a small, light weight, battery powered printer that allows a mobile user to print from a mobile device

data collection

A ____ ____ device obtains data directly at the location where the transaction or event takes place. These types of devices are used with wireless connection in restaurants, grocery store, warehouses, factories, and the outdoors. Smartphones can be used as this as well.

display port

A ____ ____ is an alternative to DVI that also supports HDMI

flatbed scanner

A ____ ____ works in a manner similar to a copy machine except it creates a file of the document in memory instead of a paper copy

monitor

A ____ is a display that is packaged as a separate peripheral device

thermal

A ____ printer generates images by pushing electrically heated pins against the heat-sensitive paper

photo

A ____ printer is a color printer that uses lab-quality photos, many using ink-jet technology

label

A ____ printer is a small printer that prints on an adhesive-type material that can be placed on a variety of items

display

A ____ visually conveys text, graphics, and video information

all-in-one

An ___ ___ ___ printer is a single device that prints, scans, copies, and in some cases faxes. Sometimes called multifunction printer

ink-jet printer

An ___ ____ printer forms characters and graphics by spraying tiny drops of liquid ink onto a piece of paper

optical reader

An ____ ____ is a device that uses a light source to read characters, marks, and codes and then converts them into digital data that a computer can process.

interactive whiteboard

An ____ ____ is a touch-sensitive device resembling a dry-erase board, that displays the image on a connected computer screen

nits

Brightness of a display is measured in _____, which is a unit of visible light intensity equal to one candela per square meter. Displays today range from 250 to 550. The higher the (unit) the brighter the image

contrast ratio

Describes the difference in light intensity between the brightest white and darkest black that can be produced on a display. This ratio today ranges from 500:1 to 2000:1. Higher ratio represents colors better.

native resolution

Displays are optimized for a specific resolution, called the _____ ____.

force feedback

Joysticks, wheels, gamepads, and motion-sensing game controllers can be considered output devices when they include ____ ____, which is technology that sends resistance to the device in response to actions of the user

The Americans with Disabilities Act

Requires any company with 15 or more employees to make reasonable attempts to accommodate the needs of physically challenged employees

milliseconds (ms)

Respond time of a display refers to the time in ____ that it takes to turn a pixel on or off. Range from 2-16. The lower the number, the faster.

Dot pitch

The distance in millimeters between pixels on a display. aka pixel pitch. Text created with smaller (pixel pitch) is easier to read. The average on a display is .30 mm or lower. The lower the number, the sharper the image

backlight

The light source of a display, called the _____, often uses CCFL (cold cathode fluorescent lamp) or LED (light-emitting diode) technology.

digital signal

Today's monitors use a ____ ____ to produce a picture.

motion input

With ____ ____, also called gesture recognition, users can guide on screen elements using air gestures (gaming, used for military training, rehabilitation, training surgeons)

pen input

With ____ _____ you touch a stylus or digital pen on a flat surface to write, draw, or make selections.

Large format

___ ___ printer create photo-realistic quality color prints

plotters

___ are sophisticated printers used to produce high-quality drawings

HDMI (high definition media interface)

____ port combines DVI with HD television and video

Impact

____ printers form characters and graphics on a piece of paper by striking a mechanism against an inked ribbon that physically contacts the paper. Ideal for printing multipart forms because they can easily print through many layers of paper. Used by many factories, warehouses, and retail counters

DVI (digital video interface)

_____ port enables digital signals to transmit display directly to a monitor.

stylus

a small metal or plastic device that looks like a tiny ink pen, but uses pressure instead of ink

graphics tablet

aka digitizer, is an electronic plastic board that detects and converts movements of a stylus or digital pen into signals that are sent to a computer. used by architects, mapmakers, designers, artists

Input

any data or instructions entered into the memory of a computer (keyboard, pointing devices, touch screen, pen input, motion input, voice input, video input, scanners and reading devices)

built-in laptop computer

compact keyboard, usually does not include a numeric keypad

output

data that has been processed into a useful form four types are text, graphics, audio, and video

MICR (magnetic ink character recognition)

devices that read text with magnetized ink. the reader converts MICR characters into a form the computer can process. used by banks for check processing

ergonomic keyboard

has a design that reduces chance of repetitive stress injuries (also an ergonomic mouse)

pointing stick

pressure-sensitive pointing device shaped like a small, round pencil erase that is positioned between keys on a mobile computer

Magstripe readers

read the magnetic strip on the back of cards such as: credit cards, bank cards, entertainment cards, ID cards, your bearcat ID

optical character recognition (OCR)

reads and converts text documents into electronic files without the need to rekey them. ocr software converts a scanned image into a text file that can be edited with a word processing application

optical mark recognition (OMR)

reads hand-drawn marks such as circles or rectangles. these devices read bubble sheets from exams

LCD (liquid crystal display) monitor

sandwiches liquid between 2 sheets of material that presents sharp, flicker-free images on a screen when illuminated used by desktop monitors and those on mobile computers and devices

digital pen

slightly larger than a stylus, an input device that captures and converts a user's handwriting or drawings into a digital format, which users can upload or transfer to a computer or mobile device

RFID can track:

times of marathon runners locations of people and other items lift tickets for skiers gauge temperature and tire pressure on vehicles check our library books manage purchases payments as vehicles pass through booths on toll-way systems provide access in rooms or buildings

Keyboard (parts)

typing area function keys toggle key navigation keys media control buttons internet control buttons other special keys

optical mouse

uses optical sensors that emit and sense light to detect the mouse's movement

RFID (radio frequency identification)

uses radio signals to communicate with a tag placed in or attached to an object