Atari 130XE User Manual

Using Random Numbers
and Mathematical Functions:
RND, +, -, *, /
In itially computers were developed to process numbers quickly and easi ly.
To take advantage of the computer's ability to calculate a math answer
in a few milliseconds, you must know how to speak to a computer.
NUMBERS
Type the statement below and press IReturnl :
PRINT H'
The computer should pr in t the number 10. Make sure you use the
numerals 1 and 0, not letters. Practice printing the fo ll ow in g numbers:
PRINT J.999999999
PRINT-J.99999999
Use the minus sign (-) on the Up Arrow key ~ to indicate negative
numbers. Do not use commas
in numbers. Type the statements below
to see what happens when commas are used:
PRINT ~ .. 876 .. 543 .. 2J.9
PRINT ~ .. 876 .. 543 .. 2J.9
In both exampl es, the computer interprets the commas as separators
in a series of numbers. It spaces the numbers out across the screen
according to its preset tab positions. To the computer, the 9 is not 9
billion, just the number 9 fo ll owed by a se ri es of other numbers.
SCIENTIFIC NOTATION
The computer may not understand commas when it prints numbers,
but it does understand exponents. Often it will automatical ly translate
a large number into an exponential form . Try the numbers below:
PRINT ~~~~~~~~~~~
PRINT 55555555555
PRINT J.J.J.J.J.J.J.J.J.J.J.
PRINT-J.J.J.J.J.J.J.J.J.J.J.
PRINT-~8765 432J.J.2
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Atari 130XE Specifications

General

Brand	Atari
Model	130XE
Category	Desktop
Language	English