user manual

12–6 Simple Programming
5. End the program with a return instruction, which sets the program pointer back
to
 !
after the program runs. Press
|
.
6. Press

(or
{e
) to cancel program entry.
Numbers in program lines are stored as precisely as you entered them, and they're
displayed using ALL or SCI format. (If a long number is shortened in the display,
press
|
to view all digits.)
To enter an equation in a program line:
1.
Press
|H
to activate Equation–entry mode. The EQN annunciator
turns on.
2. Enter the equation as you would in the equation list. See chapter 6 for details.
Use
b
to correct errors as you type.
3. Press

to terminate the equation and display its left end. (The equation
does
not become part of the equation list.)
After you've entered an equation, you can press
|
to see its checksum
and length. Hold the

key to keep the values in the display.
For a long equation, the
¨
and
§
annunciators show that scrolling is active for
this program line. You can use

and

to scroll the display.
Keys That Clear
Note these special conditions during program entry:


always cancels program entry. It never clears a number to zero.

If the program line doesn't contain an equation,
b
deletes the current
program line. It backspaces if a digit is being entered ("_" cursor present).

If the program line contains an equation,
b
begins editing the equation. It
deletes the rightmost function or variable if an equation is being entered ("
¾
"
cursor present).

{c
{

} deletes a program line if it contains an equation.

To program a function to clear the X–register, use
{c
{
º
}.