IBM 4400 manual Glossary, Ascii

D Glossary

	A
Active column	The horizontal location on the paper where the next
	character prints. After printing a character, the printer
	advances the active column.
Active position	The position on the paper where the next character
	prints. The active position is defined by the horizontal
	position (active column) and the vertical position (active
	line).
ASCII	Abbreviation of American Standard Code for
	Information Interchange.

	B
Baud	A unit of speed that measures the rate at which
	information is transferred. Baud rate is the reciprocal of
	the length 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 communicate properly, a
	printer must be configured to operate at the same baud
	rate as its host computer.
Bold	A typeface with a heavy line thickness produced by a
	double strike print method. See also character weight.
	Compare with shadow printing.
Buffer	A reserved area in printer memory that data is written to
	and read from during data transfers.

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