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WORD DEFINITION

the processor.

Off-line Describes peripheral devices that operate independently and are
not under the control of the processor.

Operating system A set of programs that control and supervise the resources of a
computer system. It also acts as an interface between the user and
the computer.

Peripheral Any hardware device connected to and controlled by the
central processing unit.

Plotter An output device specially designed to produce a hard copy of
graphical data.

Point of sale A device that reads data at the source of a transaction (for
terminal example. a supermarket checkout) and stores it for subsequent
transmission directly to the computer system for processing.

Primary Memory Random Access Memory and Read Only Memory.

Printer A device specially designed to produce a hard copy of computer
output.

Protocol A set of rules and procedures controlling the transmitting and
receiving of data so that different devices can communicate with
each other.

Pseudocode A language consisting of English-like statements used to
define algorithm.

Real-time A processing mode in which the passage of real-time is critical
to the application.

Record A collection of fields on data related to one entity.

Resolution A characteristic of a monitor’s screen, determined by the number of
pixels that can be displayed by it.

Software A collection of programs, procedures and routines which direct the
operations of a computer.

Software package A fully documented program or set of programs generalised
and designed to be used with little or no modification.

Sort Redistribution of data into an order on the basis of the contents of a
key item (sort-key).

Source code Program written in high level language or assembly level language.

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