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Glossary
ASCENDERS
. That part of a character that rises above the waist line. Also,
a term used for superscript characters.
ASCII CHARACTERS
. ASCII is an acronym for American Standard Code for
Information Interchange. ASCII characters are unique, 7-bit values that
represent letters, numbers, spaces, and symbols. This coding scheme
allows for standardization of data and control communication between
devices.
BASELINE
. The imaginary horizontal line on which a character or line of
characters rests.
BAUD
.
The speed at which data flows between the printer and computer,
measured in bits of information transmitted per second.
BIT
. Bit is an acronym for binary digit, one of the two digits (0 and 1) used
in binary notation. Usually, eight bits are used to make up one character,
or data byte.
BUFFER
. Two buffers are used. A print buffer consisting of temporary
memory in which the printer holds incoming print jobs, and a dedicated
line buffer which holds the next line of characters or graphics to be
printed.
CHARACTER DOWNLOADING
. Process of defining bit-image data used to
print a character, and assigning it to a data byte value between 0 and 255.
Download characters are stored in RAM (temporary memory).