124 Universal Control Commands
• In Epson and IBM Proprinter XL emulations, the American Standard
Code for Information Interchange (ASCII) is used.
• In DEC emulations, American National Standards Institute (ANSI)
standards are used.
Aspects of these standards relevant to the emulations contained in the
4100 printer are described in this section.
IDENTIFYING DATA BYTES
Individual data bytes can be identified using one of several number
systems. This section describes three number systems in common use:
• Binary
• Decimal
• Hexadecimal
Three number systems are used because each has advantages in
specific situations. Some understanding of these number systems is
beneficial when working with printers.