Keys That Clear - HP 33s User Manual

5. End the program with a return instruction, which sets the program pointer back
to   after the program runs. Press
Å ¹ £
6. Press (or
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,
º Î
press
To enter an equation in a program line:
º d
1. Press
turns on.
2. Enter the equation as you would in the equation list. See chapter 6 for details.
~
Use to correct errors as you type.
Ï
3. Press
does not become part of the equation list.)
After you've entered an equation, you can press
and length. Hold the
For a long equation, the
this program line. You can use

Keys That Clear

Note these special conditions during program entry:
Å
always cancels program entry. It never clears a number to zero.
If the program line doesn't contain an equation,
program line. It backspaces if a digit is being entered ("_" cursor present).
If the program line contains an equation,
deletes the rightmost function or variable if an equation is being entered ("  "
cursor present).
¹ ¡
To program a function to clear the X–register, use
12–6
Simple Programming
) to cancel program entry.
to view all digits.)
to activate Equation–entry mode. The EQN annunciator
to terminate the equation and display its left end. (The equation
Î
key to keep the values in the display.
and annunciators show that scrolling is active for
Õ
and
{  } deletes a program line if it contains an equation.
º Ô
.
º Î
Ö
to scroll the display.
~
~
begins editing the equation. It
¹ ¡
to see its checksum
deletes the current
{  }.