IBM 6400 Series, Setup Manual

Page: 287 / 316

287
E
Glossary
A to D Analog to Digital
active The horizontal location on the paper where the next
character will print. After printing a character, the printer
advances the active column.
active line The vertical location on the paper where the next
character will print. After printing a line, the printer
advances the active line.
active position The position on the paper where the next character will
print. The active position is defined by the horizontal
position (active column) and the vertical position (active
line).
ACK (Positive) acknowledge. Affirmative or acknowledge.
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
8-bit code with 256 different bit patterns. There is no
parity recommendations.
attributes, print Operations performed on text that alter its appearance
but do not change the font. Examples: underlining,
superscripting, bold, etc.
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 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 print attribute specifying text of a heavy line thickness.
This sentence is bold .
See also character weight .
buffer A reserved area in memory where data is written and
read during data transfers.