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173 Cards in this Set

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  • Back
Any data and instructions entered into the memory of a computer.
a collection of unprocessed text, numbers, images, audio, and video.
a series of instructions that tells a computer what to do and how to do it.
an instruction that causes a program to perform a specific action.
an instruction a user issues by replying to a question displayed by a program.
user response
any hardware component that allows users to enter data and instructions (programs, commands, and user responses) into a computer.
Input Device
an input device that contains keys users press to enter data and instructions into a computer.
Special keys programmed to issue commmands to a computer...labeled with F followed by a number.
Function Keys
a key that switches between two states each time a user presses the key.
toggle key
locks the numeric keypad so you can use the keypad to type numbers.
Displays the start menu when pushed.
Windows Key
Displays an items shortcut menu when pressed.
Application Key
Allows you to position the insertion point.
a symbol on the screen, usually a blinking vertical bar, that indicates where the next character you type will be displayed.
Insertion Point
an input device that allows a user to control a pointer on the screen.
pointing device
a small symbol on the screen whose location and shape change as a user moves a pointing device.
a pointing device that fits under the palm of your hand comfortably.
has a metal or rubber ball on its under side.
mechanical mouse
a rectangular rubber or foam pad that provides better traction than the top of a desk.
mouse pad
uses devices that emit and sense light to detect the mouse's movement.
optical mouse
a stationary pointing device with a ball on its top or side.
small, flat, rectangular pointing device that is sensitive to pressure and motion.
a pressure sensitive pointing device shaped like a pencil eraser that is positioned between keys on a keyboard.
pointing stick
a vertical lever mounted on a base.
a steering wheel type input device.
a pointing device that enables users to scroll through and play music, adjust volume, and customize settings.
control pad
sometimes called a game controller, is a pointing device that controls the movement and actions of players or object in video games or computer games.
a handheld input device that can detect the presence of light.
light pen
a touch sensitive display device.
touch screen
users write, draw, and tap ona flat surface to enter input.
pen input
a small metal or plastic device that looks like a tiny ink pen but uses pressure instead of ink.
a flat, rectangular, electronic, plastic board. sometimes referred to as a digitizer.
graphics tablet
the process of entering input by speaking into a microphone.
voice input
also called speech recognition, is the computers capability of distinguishing spoken words.
voice recognition
the process of entering any sound into the computer such as speech, music, and sound effects.
Audio input
allows users to take pictures and store the photographed images digitally. instead of on traditional film.
digital camera
the number of horizontal and vertical pixels in a display device.
smallest element in an electronic image.
the process of capturing full motion images and storing them on a computer's storage medium such as a hard disk or DVD.
Video input
records video as digital signals instead of analog signals.
digital video (DV) camera
type of digital video camera that enables a home or small business user to capture video and still images, send email messages with video attachments, add live images to instant messages, broadcast live images over the internet, and make video telephone calls.
a PC video camera or PC camera
any video camera that displays its output on a web page.
web cam
a meeting between two or more geographically separated people who use a network or the Internet to transmit audio and video data.
video conference
a light senstive input device that reads printed text and graphics and then translates the results into a form the computer can process.
similar to teh copy machine except it creates a file of the document in memory instead of a paper copy.
flatbed scanner
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.
optical reader
a technology that involves reading typewritten, computer printed, or hand printed characters from ordinary documents and translating the images into a form that the computer can process.
optical character recognition OCR
a document that you return to the company that creates and sends it.
turnaround document
a technology that reads hand drawn marks such as small circles or rectangles.
optical mark recognition OMR
optical reader that uses laser beams to read bar codes by using light patterns that pass through the bar code lines.
bar code reader (scanner)
an identification code that consists of a set of vertical lines and spaces of different widths.
bar code
a technology that uses radio signals to communicate with a tag placed in or attached to an animal or a person.
RFID radio frequency identification
reads the magnetic stripe on the back of credit cards, entertainment cards, bank cards, and other similar cards.
magnetic stripe card reader (magstripe reader)
a self serving banking machine that connects to a host computer through a network.
ATM automated teller machine
the technology of authenticating a person's identity by verifying a personal characteristic.
compared in size to a credit card or ATM card, stores personal data on a thin microprocessor embedded in the card.
smart card
requires any company with 15 or more employees to make reasonable attempts to accomodate the needs of physically challenged workers.
Americans with disabilities Act ADA
metal or plastic plate placed over the keyboard that allows users to rest their hands on the keyboard without accidentally pressing any keys.
data that has been processed into a useful form.
examples of this type of output are memos, letters, announcements, press releases, reports, advertisements, newsletters, envelopes, mailing labels, and email messages.
examples of output include...
text, graphics, audio, and video.
any type of hardware component that conveys information to one or more people.
output device
examples of output devices include...
printers, speakers, headphones, and earphones, fax machines, joysticks, wheels, and gamepads.
an output device that visually conveys text, graphics, and video information.
display device
a display device that is packaged as a separate peripheral.
the information appears in one color on a different color background.
a lightweight display device with a shallow depth and flat screen that typically uses LCD (liquid crystal display) or gas plasma technology.
flat panel display
LCD monitors, LCD screens and plasma monitors are types of what?
flat panel displays
a desktop monitor that uses an LCD to display images.
LCD monitor or flat panel monitor
the amount of space something takes up on the desk
uses a liquid compound to present information on a display device.
(LCD) liquid crystal display
the time in milliseconds that it takes to turn a pixel on or off.
response time
the standard unit of luminous intensity.
the distance in millimeters between pixels in a display device.
pixel pitch or dot pitch
controls the manipulation and display of graphics on a display device.
graphics processing unit
enables digital signals to transmit directly to the LCD monitor.
Digital Video Interface Port (DVI) port
the number of bits used to store information about each pixel.
bit depth or color depth
a display device that uses gas plasma technology, which sandwiches a layer of gas between two glass plates.
plasma monitor
a desktop monitor that contains a cathode ray tube.
CRT monitor (cathode ray tube) monitor
this program encourages manufacturers to create energy efficient devices that require little power when they are not in use.
a magnetic field that travels at the speed of light.
Electromagnetic Radiation (EMR)
an output device that produces text and graphics on a physical medium such as paper or transparency film.
a computer or other device transmits output to a printer via radio waves.
bluetooth printing
a printer communicates with a computer or other device using infrared light waves.
infrared printing
forms characters and graphics on a piece of paper without actually striking the paper.
nonimpact printer
a type of nonimpact printer that forms characters and graphics by spraying tiny drops of liquid ink into a piece of paper.
Ink Jet printer
a color printer that produces photo lab quality pictures.
photo printer
a high speed, high quality nonimpact printer.
laser printer
generates images by pushing electrically heated pins against heat sensitive paper.
thermal printer
a small lightweight battery powered printer that allows a mobile user to print from a notebook computer, tablet PC, PDA, or smart phone while traveling.
mobile printer
a small printer that prints on an adhesive type material that can be placed on a variety of items such as envelopes, packages and toys.
label printer
sophisticated printers used to produce high quality drawings such as blueprints, maps, and circuit diagrams.
creates photo realistic quality color prints.
large-format printers
forms characters and graphics on a piece of paper by striking a mechanism against an inked ribbon that physically contacts the paper.
impact printer
an impact printer that produces printed images when tiny wire pins on a print head mechanism strike an inked ribbon.
dot-matrix printer
a high speed impact printer that prints an entire line at a time.
line printer
a component of a computer that produces music, speech, or other sounds, such as beeps.
audio output device
cover or are placed outside the ear.
rest inside the ear canal
earphones or earbuds
occurs when you hear a persons voice or when the computer talks to you through the speakers on the computer.
voice output
a device that codes and encodes documents so they can be transmitted over telephone lines.
fax machine
a single device that looks like a copy machine but provides the functionality of a printer, scanner, copy machine, and perhaps a fa machine.
multifunction peripheral or all in one devices
a device that takes the text and images displaying on a computer screen and projects them on a larger screen so an audience can see the image clearly.
data projector
holds data, instructions and information for future use.
the physical material on which a computer keeps data, instructions and information.
storage medium or secondary storage
the number of bytes or characters a storage medium can hold.
the computer hardware that records and/or retrieves items to and from storage media.
storage device
the process of transfering data, instructions and information from memory to a storage medium.
the process of transferring items from a storage medium into memory.
measures the amount of time it takes a storage device to locate an item on storage medium or the time required to deliver an item from memory to the processor.
access time
the process of dividing the disc into tracks and sectors, so the operating system can store and locate data and information on the disk.
a storage device that contains one or more inflexible, circular platters that magnetically store data, instructions, and information.
hard disk
align magnetic particles horizontally around the surface of the disk
longitundinal recording
align the magnetic particles vertically, making much greater storage capacity.
perpendicular recording
made of aluminum, glass, or ceramic and is coated with an alloy material that allows items to be recorded magnetically on its surface.
the vertical section of a track that passes through all platters.
occurs when a read/write head touches the surface of a platter, usually resulting in a loss of data or sometimes of the entire drive.
head crash
a duplicate of a file, program or disk that you can use in case the original is lost, damaged, or destroyed.
consists of a memory chip on a hard disk that stores frequently accessed items such as data, instructions, and information.
disk cache or buffer
a separate free standing hard disk that connects with a cable to a USB port or fire wire port on the system unit.
external hard disk
a hard disk that you either insert or remove from either a dock or a drive.
removable hard disk
consists of a special purpose chip and electronic circuits that control the transfer of data, instructions and information from a disk to and from the system bus and other components in the computer.
disk controller
a service on the web that provides hard disk storage to computer users, usually for a minimal monthly fee.
online storage
a portable, inexpensive storage medium that consists of a thin, circular, flexible plastic Mylar film with a magnetic coating enclosed in a square shaped plastic shell.
floppy disk or diskette
a small opening that has a tab you slide to cover or expose the notch.
write-protect notch
a type of storage media that consists of a flat, round, portable disc made of metal, plastic, and lacquer that is written and read by a laser.
optical disc
a type of optical dis that users can read but not write (record) or erase
CD-ROM Compact disc read only memory
a single session CD ROM that stores digital versions of a single role of film using a jpg file format.
picture CD
a multisession optical disc on which users can write but not erase their own items.
CD R compact disc recordable
an erasable multisession disc you can write on multiple times.
CD-RW compact disc rewritable
an extremely high capacity optical disc on which users can read but not write or erase.
DVD-ROM (digital versatile disc read only memory)
a magnetically coated ribbon of plastic capable of storing large amounts of data and information at a low cost.
a thin credit card sized device that fits into a PC card slot.
PC card
a flash memory storage device that plugs in a USB port on a computer or mobile device.
USB flash drive or pen drive
similar in size to a credit card or ATM card, stores data on a thin microprocessor embedded in the card.
smart card
a 100 to 215 foot roll of film
a small sheet of film usually about 4 by 6 inches.
describes a process in which two or more computers or devices transfer data, instructions, and information.
computer communications
a wireless network that provides internet connections to mobile computers and other devices.
hot spot
a coffeehouse or restaurant that provides personal computers with internet access to its customers.
a navigation system that consists of one or more earth based receivers that accept and analyze signals sent by satellites in order to determine the reciever's geographic location.
global positioning system (GPS)
work online with other users
allows users to share documents with others in real time.
online meeting
software that helps groups of people work together on projects and share information over a network.
a collection of computers and devices connected together via commmunication devices and transmission media.
a network that connects computers and devices in a limited geographical area such as a home, school computer lab, office building or closely positioned group of buildings.
LAN local area network
a LAN that uses no physical wires.
wireless LAN
allows users connected to a network to transfer money from one bank account to another via transmission media.
electronic funds transfer (EFT)
a legal agreement that allows multiple users to access the software on a server simultaneously.
network license
a third party business that provides networking services such as secure data and information transfer, storage, email, and management reports.
value added network (VAN)
a high speed network that connects local area networks in a metropolitan area such as a city or town and handles the bulk of communications activity across the region.
metropolitan area network (MAN)
a network that covers a large geographic area such as a city, country, or the world, using a communications channel that combines many types of media such as telephone lines, cables, and radio waves.
wide area network (WAN)
one or more computers act as a server, and the other computers on the network request service from the server.
client/server network
controls access to the hardware, software and other resources on the network and provides a centralized storage area for programs, data, and information.
server or host computer
other computers and mobile devices on the network that rely on the server for its resources.
refers to the layout of the computers and devices in a communications network.
network topology
a network standard that specifies no central computer or device on the network or (nodes) should control when data can be transmitted;
a temporary connection that uses one or more analog telephone lines for communications
dial up line
a type of always-on connection that is established between two communications devices.
dedicated line
transmits at fast speeds on existing standard copper telephone wiring.
DSL digital subscriber line
any of several types of long distance telephone lines that carry multiple signals over a single communications line.
T-carrier line
a service that carries voice, data, video, and multimedia at very high speeds.
ATM (asynchronous transfer mode)
a digital modem that sends and receives digital data over the cable television network.
cable modem or broadband modem
allows access to the web wirelessly from a notebook computer, PDA, smart phone, or other mobile device.
wireless modem
an adapter card, PC card, or flash card that enables the computer or device to access a network.
network card or network interface card
a communications device that connects multiple computers or other routers together and transmits data to its correct desitination on the network.
the amount of data, instructions, and information that can travel over a communications channel
consists of materials or substances capable of carrying one or more signals.
transmission media
transmit multiple signals simultaneously
a wireless transmission medium that distributes radio signals through the air over long distances such as between cities, regions, and countries and short distances such as within an office or home.
broadcast radio
a form of broadcast radio that is used widely for mobile communications, specifically wireless modems and celluar telephones.
cellular radio
are radio waves that provide a high speed signal transmission.
a space station that receives microwave signals from an earth based station, amplifies the signals, and broadcasts the signals back over a wide area to any number of earth based stations.
communications satellite