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Unformatted text preview: h a controller mounted in a single unit. All the tapes of an
automated tape library form a single large storage unit. They are typically used for
data archiving and as an online data backup device for automated backup.
Automatic Teller Machine (ATM): An unattended machine used in banks that
allows a customer to deposit or withdraw cash by the use of an electronic card
without the need to interact with a bank employee.
Auxiliary memory: A storage that supplements the main memory of a computer.
Often referred to as secondary storage, this section of the computer's memory is nonvolatile and has low cost per bit stored, but it generally has an operating speed
far slower than that of the primary storage.
Backbone: The main trunk lines of a computer network that facilitates the
interconnection of other computers and computer networks on the same network.
Background processing: The automatic execution of lower-priority (background)
computer programs when higher-priority (foreground) programs are not using the
Backup: Alternate facilities of programs, data files, hardware equipment, etc. that
are used in case the original one is destroyed, lost or fails to operate.
Backup file: A copy of a file, created as a safety precaution against loss of data
caused due to corruption or inadvertent deletion of the original file.
Band printers: See chain printers.
Bandwidth: The range of frequencies available for data transmission. The wider
the bandwidth of a communications system, the more data it can transmit in a
given period of time.
Bar codes: Representation of alphanumeric data by a combination of adjacent
vertical lines (called bars) by varying their width and the spacing between them. A
barcode reader is a scanner used for reading (decoding) bar-coded data.
Base: The total number of digits (symbols) available to represent numbers in a
positional number system. Also known as radix.
Basic Input Output System (BIOS): Programs stored in a ROM chip of a computer
that checks the input and output devices when the system is sta...
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This document was uploaded on 04/07/2014.
- Spring '14