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nonvolatile memory
The portion of the printer’s memory that is not lost when you turn
off the printer. The ROM portion of nonvolatile memory is
permanent. The EEPROM portion is permanent unless it is
reprogrammed.
number systems
Three number systems are commonly used with printers:
decimal
is
base
10
and uses
the digits
0, 1, 2,
3, 4,
5,
6,
7, 8,
and 9. This is the most familiar system.
hexadecimal (hex)
is base
16
and uses the characters
O-9
and
A-F. This is frequently used by programmers. Any decimal
number between 0 and 255 can be expressed by a two-digit
hexadecimal number.
binary
is base 2 and uses only the digits
0
and
1.
All
information in a computer system is handled in binary form to
represent electrical signals that are on or off. A binary digit is
often called a bit; any decimal between 0 and 255 can be
expressed by an eight-bit binary number.
oblique
Refers to a typestyle in which upright characters have been
pivoted to produce a slant. Sometimes referred to as italic.
off line
When the printer is off line, it cannot communicate with the
computer.
on line
When the printer is on line, it can communicate with the
computer.
Glossary
GL-7