Atari 400 User Manual

Introduction to Atari BASIC 53
Table 3-1. Order of Evaluation
Operator Description
Parentheses
( ) Used to alter order
of evaluation.
A
Ex ponentiation
-
Unary Minus
Arithmetic
*
Multiplication
Operators / Division
+
Addition
-
Subtraction
=
Equal To
-<>
Not Equa l To
Relational
-<
Less Than
Operators
>
Greater Than
-<=
Less Than or Equal To
>=
Greater Than or Equal To
Boolean
NOT
Logical Complement
Operators
AND Logi ca l AND
OR Logical OR
Arithmetic Operations
The
symbols used for add iti on, s ubtraction, multiplication ,
d ivision, and exponen ti atio n are known as arithmetic operators
in
BASIC. Th e sy mb ols + a nd - are used for addition and
subtraction respective l y. The asterik (*) is us ed to indi ca te
multipli cat ion , w hile the slash (/ ) is us ed to indicate division .
Wh en a + or - sig n pr ecedes a numb er, the symbol is u se d to
specify that numb er's sign. When + or - is u se d to c hang e a

Atari 400 Specifications

General

Manufacturer	Atari
Model	400
Type	Home Computer
Release Year	1979
CPU	MOS Technology 6502
CPU Speed	1.79 MHz
ROM	10 KB
Operating System	Atari OS
Keyboard	Membrane keyboard
RAM	8 KB (expandable to 48 KB)
Graphics	ANTIC and GTIA chips
Sound	4 channels
Display	RF output for connection to TV
Storage	Optional cassette tape drive or floppy disk drive
Ports	Cartridge
Display Resolution	320x192 (16 colors)