Printronix ANSI Printer manual Acia, Ascii

C Glossary

	A
A to D	Analog to Digital
ACIA	Asynchronous Communication Interface Adapter
ACK	Acknowledge character. A transmission control
	character transmitted by the printer as an affirmative
	response to an inquiry from the host.
active column	The horizontal location on the paper where the next
	character will print.
active line	The vertical location on the paper where the next
	character will print.
active position	The position on the paper where the next character
	will print. The intersection of the active column and
	the active line.
ASCII	American Standard Code for Information
	Interchange. A standard character encoding scheme
	introduced in 1963 and used widely on many
	computers and printers. It is a 7-bit code with 128
	different bit patterns. There is no parity
	recommendation.
attributes, print	Operations performed on text that alter its
	appearance but do not change the font. Examples:
	underlining, superscripting, bold, etc.
	B
bar code	A printed code consisting of parallel bars of varied
	width and spacing and designed to be read by a one-
	dimensional scanning device.
baud	A unit of speed that measures the rate at which
	information is transferred. Baud rate is the reciprocal
	of the duration in seconds of the shortest pulse used
	to carry data. For example, a system in which the
	shortest pulse is 1/1200 second operates at 1200
	baud. On RS-232 serial lines, the baud rate equals
	the data flow rate in bits per second (bps). To

85