Printronix ANSI Printer manual Rts, Saa, Scs

Appendix C

reset	To turn off, deactivate, disable, or return to a
	previously determined state.
resolution	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.
ROM	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 permanently stored in a printer and
	available at any time. See also RAM.
roman	A type style in which the characters are upright. This
	is sentence is printed in a roman type style.
RTS	Request To Send. Control signal from the printer.
	S
SA	Set Attribute
SAA	Systems Application Architecture
sans serif	A typeface or font in which the characters do not
	have serifs. This font is sans serif.
SCS	System Network Architecture (SNA) Character
	String. Usually commands to set printer format, etc.
serial communications	The sequential transmission of data, in which each
	element is transferred in succession.
serial matrix	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 hammers mounted on a
	rapidly oscillating shuttle. The hammers fire
	simultaneously to print entire lines at a time.
serif	A short line stemming from and at an angle to the
	upper or lower end of the stroke of a letter or number
	character.
	A serif
set	To turn on, activate, invoke, or enable.

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