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51 Cards in this Set

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