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Glossary
RAM
read
reset
resolution
ROM
roman
RTS
sans serif
serial communications
serial matrix
108
R
Acronym for Random-Access Memory. Also called "main
memory" or "working memory," this is the active memory
of a printer, into which programs are loaded. This
memory can be read from or written to at any time, hence
the term "random-access." RAM is also termed "volatile"
because whatever is in RAM is lost when power is turned
off or interrupted.
See also ROM.
To retrieve data from memory (RAM, NVRAM) or mass
storage (hard disk, floppy diskette, etc.).
To turn off, deactivate, disable, or return to a previously
determined state.
A measure expressing the number of units in a given
range used to create an image. In printing, this is
expressed as the number of dots per inch (dpi)
horizontally and vertically.
Acronym for Read-Only Memory. Programs, instructions,
and routines permanently stored in the printer. ROM is
not lost when power is turned off and cannot be written
to, hence the term "read-only." ROM-resident fonts are
fonts which are permanently stored in a printer and
available at any time.
See also RAM.
A type style in which the characters are upright. This is
sentence is printed in a roman type style.
Abbrev. for Request To Send. Control signal from the
printer.
S
A typeface or font in which the characters do not have
serifs. This font is sans serif.
The sequential transmission of data, in which each
element is transferred in succession.
A type of printing technology used in some impact
printers. Data are sent to the printer through either a
serial or a parallel interface, but the print head must
receive the data serially in order to form each character.
The moving print head uses pins to form whole
characters one at a time and one after the other. The pins
print dots according to programmed matrix patterns. A
line matrix printer also forms characters with dots in
matrix patterns, but it feeds print data in parallel to many
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