NCR PC4I, Owner'S Manual

Page: 139 / 167

Glossary
A
ABORTED
Ended abnormally before completion, such as a function that is
interrupted before completion.
ACOUSTIC COUPLER
A modem that converts the data to be transmitted into a sequence
of different tones; sent via a conventional telephone handset to a
receiving modem; converts them back to a stream of binary digits.
ACRONYM
A word formed from the first letter or letters of the words in a
name, term, or phrase.
ADAPTER
A connector that has a plug for one type of cable or device and a
socket for another type. An adapter allows parts of a computer
which ordinarily don’t fit together to be connected.
ADDRESS
Data is contained in the devices which make up your computer’s
internal and external memory and the registers in its CPU, Each
accessible location within a device is assigned a number, which is
known as an “address”. In internal memory, the address is a
specific byte number. In external memory, the address is a unit
number (for example, drive A) and, for disk or diskette drives, the
address may include a track number and a sector number. Your
computer is able to locate data using these addresses.
APPLICATION PROGRAM
A program that you use on your computer to perform a specific
job, such as budgeting or word processing.
OWNER S MANUAL
G-I