Chapter 3. Data Constants, Variables, And Concepts; Basic Character Set; Alphabetic Characters; Numeric Characters - IBM 5110 Basic Reference Manual

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Chapter 3. Data Constants, Variables, And Concepts
BASIC CHARACTER SET
The BASIC character set is used to represent arithmetic and character data
entered from the keyboard as data constants and variables.
The characters that have syntactical meaning in the BASIC language fall into
three categories: alphabetic, numeric, and special characters.
Alphabetic Characters
The alphabetic characters in BASIC are the upper/lowercase letters of the
English alphabet (A-Z) and the following three characters called alphabet
extenders:
@ (the commercial at sign)
#
(the number or pound sign)
$
(the currency symbol)
Numeric Characters
The numeric characters in BASIC are the digits 0 through 9.
Data Constants, Variables, And Concepts 53