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OA/T Chp 2 Terms

Office Admin/Technology Chp 2 Terms

BIT A two-state (binary) electrical impulse in a digital computer system represented by the 1 digit for on and the 0 digit for off; an acronym for binary digit.
BYTE A string of bits (0's and 1's) representing a number or a character (alphanumeric character or symbol-including a blank space) in all ditital computer systems; eight bits equals one byte.
CPU-CENTRAL PROCESSING UNIT Compter system component that manipulates raw data, moves information, and performs required arithmetic or logic operations in a digital computer system; consists of a control unit and the arithmetic; logic units.
CHANNEL The communication link for transmitting data between the compter system and secondary storage or other computer peripherals external to the system.
CD-COMPACT DISC An optical disc that includes compact dis-random access memory (cd-rom), compact dis-recordable (cd-r), compact dis-rewritable (cd-rw), and ditigal video discs (dvd).
GUI-GRAPHICAL USER INTERFACE Combination of hardware adn software that makes it easy for the end user to respond to to computer messages, control the computer, andequest information from the computer using icons, buttons, etc. using an input device (mouse,touchpad).
HARD DISK A nonremovable magnetic disk outside the processor unit for the computers internal secondary storage; also referred to as a fixed disk.
INTERFACE Combination of hardware adn software that makes data input, response to computer messages, computer control and information requests easy through the use of function keys, screen prompts, menus, icons.
MAGNETIC DISK A common secondary storage peripheral for microcomputers where the disk cana be removed from the disk drive and the data transported witht he user to other computer computing environments.
MAINFRAME COMPUTER Computer that supports online services for several thousand users and provides processing for extensive computing applications.
MICROCOMPUTER If a digital computer that uses a microprocessor, an internal storage chip, and input/output chip, and any additional chips required by the system; includes desktop PC, WorkStation, notebook, and are often called personal computers.
MICROPROCESSOR Computer component that includes the control unit and the aisle rhythmic take a logic unit mounted on a single silicon chip; it is the main technology of microcomputers.
MID-RANGE COMPUTER Computer that supports computing requirements for small to medium size organizations as well as E commerce and networking environments; two types of midrange computers include many computers and servers.
MONITOR A calm and output device that allows the user to view soft copy by using either cathode ray tube (CRT) technology, liquid crystal display (LCD) technology, or plasma technology.
OPTICAL DISK Laser technology that Stores Data by burning microscopic pits on to disk tracks.
PATTERN RECOGNITION SYSTEM A visual system that requires a camera to be the computers eyes; visual systems are highly structured.
PERSONAL DIGITAL ASSISTANTS (PDA) A popular mobile device in the handheld computer category with a touch screen and pen-based handwriting recognition for sending and receiving e-mail; accessing the web; and exchanging information such as apointments, sales contracts, etc
POINT AND CLICK DEVICES An input device that allows end users to point and click or drag on graphical user interface or icons, buttons, and symbols to activate operating System Software and applications software functions.
PORT The connection points on a computer where the peripheral communication line is connected.
PRIMARY STORAGE Storage made of semiconductors memory chips and divided into your read only memory (ROM), random access memory (RAM), and cache memory; also called main memory or internal storage.
PRINTER a common output device for hard copy; two types include impact and non impact.
RANDOM ACCESS MEMORY (RAM) Primaries storage entire hall to the Computer System temporarily available for processing business data. RAM and is volatile memory.
READ ONLY MEMORY Non volatile primary storage, also called firmware, where critical system instructions available only to the CPU for starting the computer are stored by the computers manufacturer; variations are PROM & EPROM.
REDUCED INSTRUCTION SET COMPUTING that (RISC) Technology that enhances the speed of WorkStation microprocessors by embedding the most frequently used instructions on a chip.
REDUNDANT ARRAYS OF INDEPENDENT DISKS (RAID) 10 to more than 100 small hard disk drives combined into a single unit providing large storage capacities and high access speeds. RAID units are used to provide a fault tolerant environment.
SECONDARY STORAGE Where data, information, application software, and System Software are saved in files with unique names for future use; also called auxiliary storage. Magnetic disk, optical disk, DVD disc, USB flash drive, magnetic tape.
SERVER FARMS Multiple servers maintained by the organization or a commercial vendor who then sells the services to an organization.
STORAGE AREA NETWORK (SAN) An enterprisewide infrastructure dedicated to Data Storage by providing a high speed fiber channel network that interconnects different Storage Devices. Database servers, RAID, and tape libraries.
STORAGE SERVICE PROVIDER (SSP) A professional service that assists with storage assessment, design, management, operations, and 24-7 online Data Storage and backup either on site or offsite. If
SUPERCOMPUTER The largest, fastest, most powerful, and most expensive Computer System; used by gov't agencies and large organizations involved in research and development activities that are mathematically intensive. Aerospace, Chemical Indus., and weather forecasting.
USB FLASH DRIVE And external universal serial bus standard that supports data transfer rates of 12 million bits per second at the portable storage drive holds 250 MB of data and plugs into the microcomputer USB Port.
Created by: kksdownloads