Epson EPL-7000, User Manual

Page: 314 / 330

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 computer systems is handled in binary form. A
binary digit is often called a bit; any decimal number between
0
and
255
can be expressed by an eight-bit binary number.
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.
orientation
Refers to the direction in which characters are printed on a page.
This direction is either portrait (text printed across the width of
the page) or landscape (text printed across the length of the page).
parallel interface
See interface.
parity
A method of checking the reliability of data transmission between
the computer and printer.
GL-6
Glossary