Lexmark 249X, 248X manual Glossary

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.

220 Glossary