Atari 800 User Manual

-.0789
5
77.39
o
+.000001
67.98
Introduction to Atari BASIC 45
Again, negative floating point numbers should be preceded with
the minus sign (-). Positive floating numbers can optionally be
preceded with the plus sign (+), however, a floating point
number is assumed positive if it doesn't have a sign.
Scientific Notation
Atari BASIC uses scientific notation to express either extremely
large or extremely small numbers. A number in scientific
notation takes the following format :
± x E yy
Where ;
± is an optional plus or minus sign.
x can
either be an integer or a floating point number. This
position of the number is known as the coefficient or
mantissa.
E stands
for exponent
yy is a one or two digit exponent. The exponent gives the
number of places that the decimal point must be moved to
give its true location. The decimal point is moved to the
right with positive exponents. The decimal point is moved
to the left with negative exponents.
The
following examples specify a number in both standard
floating point and scientific notation:
1000000 -1 E6
.000001 -1 E-6
57500000-5.75 E+07
- . 00000479-4.79 E-06

Atari 800 Specifications

General

Processor	MOS Technology 6502
Processor Speed	1.79 MHz
ROM	10 KB
Graphics	ANTIC and GTIA chips
Release Year	1979
Display Resolution	up to 320 x 192
Colors	128 colors
Sound	4 channels
Storage	Cartridge, cassette, floppy disk
Ports	Cartridge, serial, monitor
Operating System	Atari OS