Operation Manual

13-4 Programming
8213PROG.DOC TI-82, Chapter 13, English Bob Fedorisko Revised: 02/09/01 9:25 AM Printed:
02/09/01 12:42 PM Page 4 of 18
About TI-82 Programs
Most features of the TI
.
82 are accessible from programs. Programs can access all
variables and named items. The number of programs that the TI
.
82 can store is
limited only by available memory.
Notes about Programs
On the TI
.
82, programs are identified by names, up to eight characters,
beginning with a letter.
A program consists of a series of program commands, which begin with a
:
(colon). A program command can be an expression or an instruction.
The TI
.
82 checks for errors when the program is executed, not as you enter
or edit the program.
Variables, lists, and matrices saved in memory are global. They can be
accessed from all programs. Storing a new value to a variable, list, or
matrix in a program changes the value in memory during program
execution.
As calculations are made in programs,
Ans
is updated, just as it would be if
the calculations were done on the Home screen. Programs do not update
Last Entry
as each command is executed.
"Breaking" a Program
É
stops program execution. When you press
É
to stop program
execution, the
ERR: BREAK
screen is displayed.
¦
To go to where the interrupt occurred, select
Goto
.
¦
To return to the Home screen, select
Quit
.
Memory Management and Erasing Programs
The size of programs you can store is limited only by available memory. To
access the memory management menu, press
y
ã
MEM
ä
from the Home
screen. Memory status is displayed on the
Check RAM...
screen. To increase
available memory, delete items, including other programs, from the
MEM DELETE FROM...
screen (Chapter 15).