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Antispyware Software
A program that protects a computer from malicious software designed to threaten privacy and confidentiality
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Adware
Spyware that tracks a user's internet browsing and installs malicious cookies
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Antivirus Software
A program that protects a computer from malicious codes such as viruses, worms, and Trojan Horse
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Arithmetic logic unit (ALU)
Part of the CPU that performs all the arithmetic and logic functions for the computer; handles addition, subtraction, multiplication and division, and also makes logical and comparison decisions.
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Application software
programs with which you accomplish tasks such as word processing, photo editing, or sending e-mail, and use the computer in a productive manner
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audio port
a port that connects audio equipment to the sound card of a computer to facilitate the exchange of data
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backup tape drive
a storage device used to save data to tape resembling audiocassetts
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bluetooth
wireless technology that uses radio waves to transmit data over short distances, and often used with mobile devices
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boot
the process of starting up a computer
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boot process
the process of starting up a computer
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burn
the process of recording data to optical media such as a CD or DVD
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bus topology
a networking configuration in which all devices are connected to a central high-speed cable called the bus or backbone
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cathode-ray tube (CRT)
a picture tube device used in a monitor, similar to a television
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CD burner
an optical storage device capable of reading data from and writing data to a CD
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Central processing unit (CPU)
the part of the computer responsible for controlling all the commands and tasks that computer performs, acting as the brain of the computer
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client
in a client/server network, this is the computer most people interact with to request information from the server and to perform many of the tasks that con be accomplished with a computer
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client/server network
a network consisting of client and server computers; often used in businesses
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clock speed
a measurement of how quickly a CPU processes data, an indication of a CPU's processing power
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communication or organizational software
a program such as Microsoft Outlook, used to send and retrieve e-mail and manage day-to-day tasks
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computer fluent
the term used to describe a person who understands the capabilities and limitations of computers and knows how to use computer technology to accomplish tasks
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connectivity port
a port that enables a computer to be connected to other devices or systems, such as networks, modems, and the Internet
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control unit
the part of the CPU responsible for obtaining instructions from the compute's memory; the control unit interprets the instructions and executes them, thereby coordinating the activities of all the other computer components
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cookies
a small text file containing information that identifies a visitor to the Web site
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Data
words, numbers, sounds, or pictures that represent facts about people, events, things, or ideas
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database software
programs, such as Microsoft Access, used to store and organize large amounts of data and preform complex tasks such as sorting and querying to generate specialized reports
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dedicated server
a computer that is assigned to handle one specific task on a network
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denial of service (DoS)
an attack caused when a large number of computers attempt to access a Web site at the same time, effectively overloading it and causing it to shut down
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digital video interface (DVI) port
a port used to connect an LCD monitor to a computer in order to use a pure digital signal
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dot matrix
an impact printer, useful for printing multi-page forms
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dot pitch
the diagonal distance between adjacent pixels, measured in millimeter
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dot per inch (dpi)
a measurement of printer resolution
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dual-core
a CPU that includes two microprocessors on a single integrated circuit
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Embedded computers
components of larger products, devices that perform per-defined tasks using specially programmed processors
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Ethernet port
a port, slightly larger than a telephone jack, that can transmit data at speeds up to 1,000 megabits per second (Mbps) and is usually used to connect to a cable modem or a network
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FireWire port
a port used to send data at rates up to 800 megabits per second (Mbps), frequently used for digital cameras or digital video recorders
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flash memory
portable, nonvolatile memory, that uses electronic, solid-state circuitry
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slat screen
a type of screen used in CRT monitoys, and which differs from flat panel monitors
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function key
the keys numbers F1 through F12, located above the numeric key on a keyboard that have different functions depending upon the software program in use
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Gigabyte (GB)
approximately one billion bytes; a unit of measure for memory and storage space
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gigahertz (GHz)
one billion hertz; hertz is the unit of measure for processor speed
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graphical user interface (GUI)
a computer interface with which you interact with the computer through the use of graphics and point-and-click technology; GUIs show documents as they will look in their final form
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hard disk drive (or hard drive)
permanent storage device, located within the system unit, that holds all permanently stored software and data
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hayperthreading
technology that allows a CPU to emulate multiple processors, improving processing power and speed
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icon
a graphic representation of an object that you can click to open that object
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impact
a type of printer that resembles a typewriter; a key and ink ribbon are used to imprint a character on paper
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information processing cycle
the cycle composed of the four basic computer functions: input, process, output, storage
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ink-jet
type of printer that uses a special nozzle and ink cartridges to distribute liquid ink on the surface of the paper
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input devices
computer hardware used to enter data and instructions into a computer; examples include the keyboard, mouse, stylus, scanner, microphone, and digital camera
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internet control key
usually found at the top of a key-board. this type of key can be used for various Internet-related activities including opening a Web browser and sending e-mail
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IrDA port
a port enabling data transmission through the use of infrared light wave; the devices sharing data require a clear line of site with no visual obstructions
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key logger
a software program or hardware device that records every keystroke made on the computer
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laser
a type of printer that uses a drum, static electricity, and a laser to distribute dry ink or toner on the surface of the paper
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linux
an open-source operating system based on the UNIX operating system developed for mainframe computers
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liquid crystal display (LCD)
technology used in flat panel monitors, resulting in thinner and lighter monitors
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local area network (LAN)
a network in which the nobes are located within a small geographic area
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Mac OS
the operating system designed specifically for Apple's Mac computers
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Magnetic
a type of storage process using magnetized film to store data; used by media such a floppy disk or Zip disk
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megabyte (MB)
approximately one million bytes; a unit of measure for memory and storage apace
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megahertz
one million hertz; hertz is the unit of measure for processor speed
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MIDI port
Musical Instrument Digital Interface port used to connect electronic musical instruments to a system
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mobile devices
a port that connects to a standard telephone line, usually used to connect to the Internet or a local network, with a maximum speed of 56 kilobits per second (Kbps)
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monitor port
a port used to connect a monitor to a computer's graphic processing unit, located on the motherboard or video card
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motherboard
a large printed circuit board located in the system unit to which all other boards are connected; the motherboard contains the central processing unit (CPU), the memory (RAM) chip, and expansion card slot
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multicore
a CPU that includes more than two microprocessors on a single integrated circuit
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multifunction device (MFD)
a device that has more than one purpose, often combining input and output capabilities
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multimedia control key
usually found at the top of a key-board, this type of key can be used to control or mute speaker volume
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multimedia projectors
output devices used to display information on a screen for veiwing by an audience
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network topology
the layout and structure of a computer network
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Nobe
any object connected to a network - may be a computer or a peripheral device
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non-impact
a type of printer that does not actually touch the paper
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nonvolatile
permanent storage, as in read only memory (ROM); data remains even when power is shut down
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open-source
software whose code is made available for developers to modify and use as they wish, usually available at no cost
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operating system (OS)
system software that controls the way in which a computer system functions, including the management of hardware, peripherals, and software; Microsoft Windows XP is an operating system
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peer-to-peer (P2P) network
a network in which each node can communicate directly with every other node, and which is often used for home and small business network
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peripheral
a hardware device connected to a computer, but not located within the system unit, such as a monitor, printer, or mouse
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personal firewall
a software program or hardware device designed to prevent unauthorized access to a computer
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phishing
email that masquerades as an authentic entity such as a bank or credit card company, requesting confidential information
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presentation software
a program used to create dynamic slideshows and generate speaker notes and audience handouts
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Random Access Memory (RAM)
a computer's temporary storage space or short-term memory and stored on ships located on the motherboard; measured in megabytes (MB) and gigabytes (GB). known as volatile memory
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Read Only Memory (ROM)
a set of memory chips located ont he motherboard that stores data and instructions that cannot be changed or erased; it holds all the instructions the computer needs to start up. also known as nonvolatile memory
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refresh rate
the speed at which the pixels are re-illuminated, measured in cycles per second and expressed as hertz (Hz)
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restore point
a record created by Windows XP for all of a computer's system settings
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ring (or token-ring) topology
a network configuration in which all devices are set up in a circular layout; data flows in a circular fashion, in one direction only
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software parches
quick software fixes provided to resolve an error found in program code until a sofeware update can be issued
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spyware
software designed to capture personal and confidential information that resides on a computer and then sends it elsewhere
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star topology
a flexible and frequently used network configuration for businesses, in which nodes connect to a central communication device known as a switch
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suite
a collection of application software programs developed by the same manufacturer, bundled together and sold at a price that is usually less than the cost of purchasing each program individually
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system unit
the tower, box or console that contains the critical hardware and electrical components of a computer
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trojan horse
a program that appears to be useful of desirable, but acts maliciously in the background after installation
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universal serial bus (USB) port
a versatile port used to connect a wide array of peripheral devices to a computer.
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utility program
a computer of system software, typically as small program used to perform routine maintenance and housekeeping tasks for the computer
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virus
malicious code or program, usually installed on a computer without the user's knowledge or permission
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volatile
temporary storage, as in random access memory (RAM): data is erased when power is shut down or when you close a program
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Wide area network (WAN)
a network composed of local area networks connected over long distances
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worm
a program that is able to replicate and spread from computer to computer without human interaction
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zip drive
a magnetic storage device used to save and retrieve data on Zip drives
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zombie
a computer that is controlled remotely and can be used to help spread viruses, spyware, and spam
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