Glossary; References; Terms - IBM 6500 User Manual

Glossary

References

The following cross-references are used in this
glossary:
Contrast with. This refers to a term that has an
opposed or substantively different meaning.
See. This refers the reader to multiple-word terms that
have the same last word.
See also. This refers the reader to related terms that
have a related, but not synonymous, meaning.
Synonym for. This indicates that the term has the
same meaning as a preferred term, which is defined in
its proper place in the glossary.
Synonymous with. This is a backward reference from
a defined term to all other terms that have the same
meaning.

Terms

A
A to D. Analog to Digital
active. The horizontal location on the paper where the
next character will print. After printing a character, the
printer advances the active column.
active line. The vertical location on the paper where
the next character will print. After printing a line, the
printer advances the active line.
active position. The position on the paper where the
next character will print. The active position is defined
by the horizontal position (active column) and the
vertical position (active line).
ACK. (Positive) acknowledge. Affirmative or
acknowledge.
ASCII. American Standard Code for Information
Interchange. A standard character encoding scheme
introduced in 1963 and used widely on many
computers and printers. It is a 8-bit code with 256
different bit patterns. There is no parity
recommendations.
attributes, print. Operations performed on text that
alter its appearance but do not change the font.
Examples: underlining, superscripting, bold, and so
forth.
© Copyright IBM Corp. 2005
B
bar code. A printed code consisting of parallel bars of
varied width and spacing and designed to be read by a
one-dimensional scanning device.
baud. A unit of speed that measures the rate at which
information is transferred. Baud rate is the reciprocal of
the length in seconds of the shortest pulse used to
carry data. For example, a system in which the shortest
pulse is 1/1200 second operates at 1200 baud. On
RS-232 serial lines, the baud rate equals the data flow
rate in bits per second (bps). To communicate properly,
a printer must be configured to operate at the same
baud rate as its host computer.
bold. A print attribute specifying text of a heavy line
thickness. This sentence is bold. See also character
weight.
buffer. A reserved area in memory where data is
written and read during data transfers.
bus. A circuit for the transfer of data or electrical
signals between two devices.
C
character cell. The invisible rectangular space
occupied by a character, including the white space
around the character. The height of a cell remains
constant even with changes in the current line spacing,
and the width is equal to the current character spacing.
Used as a unit of spacing.
character proportion. The ratio of character height to
character width. See also compressed and expanded.
character set. A set of codes, each of which represents
a printable character, including symbols, punctuation,
numbers, diacritical markings, and alphabet characters.
Each character is assigned a unique code value.
character weight. The degree of lightness and
thickness of printed text. For example: Bold refers to a
heavy or thick character weight. Medium, normal, or
book weight refer to the character weight used in this
sentence.
checksum. A stored or transmitted numerical value
used to verify data integrity.
Code V. An optional QMS emulation which allows
you to create and store forms, generate logos, bar
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