HP 33s Scientific manual Function Names in Programs, RPN mode, Example Entering a Labeled Program

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 bto delete the current program line, then reenter the line correctly.

Keys:	Display:
(In RPN mode)
{e	
{c{}	
{&}	 !
{•A	  
!	 º
N	 π
z	 º
–	 !
{Y{}	 
	/
	/
	/
‡‡

Description:

Activates Program–entry mode (PRGM on). Clears all of program memory.

Labels this program routine A (for "area"). Enters the three program lines.

Ends the program. Displays label A and the length of the program in bytes.

Checksum and length of program.

Cancels program entry

(PRGM annunciator off).

A different checksum means the program was not entered exactly as given here.

Simple Programming 12–7