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Glossary
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L
lines-per-inch (lpi). The number of lines of
text or graphics that can be printed in 1
vertical inch. LPI is the movement of the
line advance, not the size of the character
being printed. If you set 6 LPI, one line is
1/6-inch; 8 LPI is 1/8-inch.
LQ. Letter quality.
N
NLQ. Near letter quality.
M
mm. Millimeter.
P
parallel interface. A type of connection
that links a printer to a computer, by
which all 8 bits of a character are sent at
the same time.
print quality. Refers to the actual
appearance of the printed matrix
character, such as draft print or letter
quality.
print speed. The number of characters that
are printed for each unit of time.
Proportional spacing. A print style in
which the characters are spaced according
to their natural width.
R
random access memory (RAM). A memory
area that may be written to repeatedly,
such as the print buffer. The contents of
RAM are overwritten when more data is
received. The contents of RAM are lost
when the printer power is turned off.
read-only memory (ROM). A memory area
that can be read from but not written to.
ROM holds the printer's resident
microcode.
S
software application. Any program loaded
on your computer used to perform a
specific task; for example, a word
processing or spreadsheet program.
symbol set. A group of symbols that are
extensions to standard characters used in
a particular country or in a specific
application. The symbol set provides
codes for the nonstandard upper half of
the ASCII character set.
T
TTL. Transistor-transistor logic.
top-of-form (TOF). The line position of the
paper where the first line of text prints.