General Information; Introduction - Texas Instruments TI-99/4A User Reference Manual

General Information
Introduction
Once your computer is set up, it is a simple process to begin using
TI BASIC. When you turn on your computer. the master computer
title screen appears. Press any key on the keyboard to get the
master selection list to
be
displayed. When the master selection list
appears, press the
1
key to select Tl BASIC. The SCreen is now
blank except for the words "TI BASIC READY" and a prompt
character
(»
followed by a ftashmg cursor (.). Whenever the
cursor is on the screen, the computer is waiting for you to enter
something. The prompt character marks the beginning of each line
you type.
Each line of the screen can display up to 28 characters. Each
statement
or
command
may be up
to
four screen lines in
length.
When you have completely filled une SCreen line, the cursor
automatically moves down to the next line as you continue typing.
When you have completely filled four lines,
the
computer
w-ill
accept more characters, but the cursor will remain in the same
position. Each character you enter will replace the last character of
the line.
All of the keys discussed in the Special Keys section may be used in
editing program lines before you press the
ENTER
key. To change
anything in a program line after you have pressed
ENTER.
you can
retype the entire program line making the desired corrections as
you
type
in
thF linp
again or you ran enter Enit Mone Note that
whenever you do any editing on a program, all open files are
closed (see OPEN statement). and all variables become
undefined.
The remainder of this section gives information which applies to
many commands and statements in TI BASIC.
11-4
Examples:
Tl BASIC READY
>NEII
>10
A~2
>RUN
**
DONE
**
>PRINT A
2
>20 8=3
>PRINT A
o
User's Reference Guide