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G-6 Glossary
READ ONLY MEMORY
(
ROM
)
. The printer's permanent memory. For the
4100 printer, ROM is the same as
ELECTRONICALLY PROGRAMMABLE READ
ONLY MEMORY
.
SERIAL INTERFACE
. Physical and logical connection between devices
where data are transmitted one bit at a time.
STOP BITS
. The number of bits that define the end of (or space between)
each serial interface byte.
SUBSCRIPT
. Used to print characters slightly lower on a line than the
baseline text around them. This option is set using the configuration
menu or with a control command. Subscript characters are sometimes
referred to as descenders.
SUPERSCRIPT
. Used to print characters slightly higher on a line than the
baseline text around them. This option is set using the configuration
menu or with a control command. Superscript characters are sometimes
referred to as ascenders.
WAIST LINE
. The imaginary horizontal line that is the height of the top of a
lower case “x” that divides tall and upper case characters. For example,
"h," "d," "A," and the like have ascender attributes because part of these
characters rise above the waist line, whereas "a," "c," "p," and the like do
not.
X
-
ON
/
X
-
OFF
. A software handshaking protocol in which a receiving device
controls data flow using the content of data itself. X-OFF and X-ON are
control characters which signal the sending device to stop or resume data
transmission.