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51 Cards in this Set
- Front
- Back
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Back-up
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the process of saving data especially for data recovery.
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Hardware
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physical parts of a pc
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Direct Connection
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a dedicated dirrect connection to the internet through a lan, own ip addr.
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Extension
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a file name feature usually 3 characters ex ppt.
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File compression
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the process of reducing the size of a file so that you can fit more files in same
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File decompression
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the process of restoring o compressed file back to original size.
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Formatting
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changing fonts and appearance of a document
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Hard Disk
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a disk that spins rapidly in the computer for storage
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Hardware
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physical parts of the computer system
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Hyperlink
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a word phrase or picture that acts as a button for www
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operating system
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a system of programs that performs a variety of technical operations
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Peripheral
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an external device such as a mouse or a keyboard
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RAM
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memory that sores program instrucions and data temporarily
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ROM
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memory that includes permanent information only. new information never written on it.
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Software
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Instructions that tell the hardware what to do to transform inplut into output
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System Software
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Software that handles the details of computing includes the operatiing system and utility programs
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URL
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the address of a website
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Viruses
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software that spreads from program to program ;software sabbotage
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workstation
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a highend desktop computer with massive computing power
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WAN
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a network that extends over long distance
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Time sharing
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technique by which maingrame computers communicate with several users simultaneously
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Terminal
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combination keyboared and screen that transfers information to and from a mainframe computer
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Supercomputer
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fast, powerful, used for applications that demand maximum power
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PDA
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pocket sized computers used for organizing
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Output
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information given out by the computer
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LAN
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multiple personal computers conncted on a network
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Intranet
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self contained intraorganizational network that is designed like the internet
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input
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information taken in by the computer
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Firmware
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a program usually for special purpose computers stored on a rom chip so it cannot be altered
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ASCII
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a code that represents characters as 8 bit codes allows binary comp to work with letters, digits
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Backward compatible
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able to run software written for older cpu's able to tead and write files compatable with older versions
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Bit
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binary didgit the smallest unit of information. two values 0 or 1
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byte
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grouping of 8 bits
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CMOS
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complementary metal oxide semi conductor stores small amouonts of data for long periods of time on batteries
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Digital
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Information made up on discreet units that can be counted
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Gigabyte
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1000 megabytes
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Kilobyte
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1000 bytes of information
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Megabyte
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1 million bytes
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Motherboard
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the circuit board that contains a computers cpu. also called a system board
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Nanoseconds
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a billionth of a second: common with units of measurement for read/write access to RAM
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Nonvolatile memory
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memory that is not lost when the computer is shut off.
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Secondary
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the category of computer storage found in peripherals
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Slots
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An area inside the computer's housing that holds special putpose circuit boards
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Storage device
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Long term repository for data. disks and tape drivers are examples
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Terabyte
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I million gigabytes
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Unicode
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65.000 character set for makeing letters,digits and special characters fit into the computers binary circuit
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Universal serial bus
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USB allows peripherals to be chained together.
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Point of sale
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a terminal with a wad reader, arcode scanner and other devices that captures check out at a store
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Plotter
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an automated drawing tool that produces finaly scaled drawings by movin pen in response to comp commands
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Optical mark reader
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a reading device that uses reflected tlight to determine the location of pencil marks on tests
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Optical character recognition
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software that locates and and identifies printed characters embedded in images
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