Definitions Of Some Terms Often Used - Epson FX-BO Operation Manual

3.1 Definitions of Some Terms Often Used
Before attempting to program, please read this section carefully as it contains
information essential to programming.
(1) 2 (Binary), D (Decimal)
and H
(Hexadecimal)
( h , (
)D and
<
>H
respectively represent binary, decimal and hexadecimal
numbers.
(2) ASCII code
Characters in computer systems are represented by groups of bits. The various
groups of bits that represent the set of characters that are the "alphabet" of any
given system are called a "coding system", or simply "code".
Codes for representing the information vary in relation to both the number of bits
used to define a single character in the assignment of bit patterns to each particular
character.
In ASCII (American Standard Code for Information Interchange) the bit group
(OlO00001h
=
<41>H
=
(65)D
represents the character "A".
The sending and receiving equipment must be programmed to acknowledge the
code used ,in computer systems.
The printer has a 96 character set, control codes, and 9 International Character
sets. These characters are also available in the Alternate mode. International
characters are put in some addresses of the ASCII code table instead of the
standard characters.
Alphabets, numbers and special symbols are addressed from
(32)D
to
(126)D
and
from
(160)D
to
(254)D.
Same characters are put in two different addresses. If your
host computer can send 8-bit data to the printer, the selection of which one to use is
up to you.
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