HP 33S, User Manual

Page: 165 / 388

Simple Programming
12–7
File name 33s-English-Manual-040130-Publication(Edition 2).doc Page : 388
Printed Date : 2004/1/30 Size : 13.7 x 21.2 cm
Function Names in Programs
The name of a function that is used in a program line is not necessarily the same as
the function's name on its key, in its menu, or in an equation. The name that is used
in a program is usually a fuller abbreviation than that which can fit on a key or in
a menu. This fuller name appears briefly in the display whenever you execute a
function — as long as you hold down the key, the name is displayed.
Example: Entering a Labeled Program.
The following keystrokes delete the previous program for the area of a circle and
enter a new one that includes a label and a return instruction. If you make a
mistake during entry, press
~
to delete the current program line, then reenter the
line correctly.
Keys:
(In RPN mode)
Display: Description:
¹ £

Activates Program–entry
mode (
PRGM on).
¹ ¡
{

}
{  }



Clears all of program
memory.
¹ Ó
A
  
Labels this program
routine A (for "area").
=
º j
¸
 



π

 
Enters the three program
lines.
º Ô
 
Ends the program.
¹ u
{  }  

Displays label A and the
length of the program in
bytes.
º Î


Checksum and length of
program.
Å Å
Cancels program entry
(
PRGM annunciator off).
A different checksum means the program was not entered exactly as given here.