HP 9g Graphing Calculator - Manual (Page 29)

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⇒ The SWAP command swaps the contents in two memory variables.
Relational Operators
The relational operators that can be used in FOR loops and conditional
branching are:
= = (equal to), < (less than), > (greater than), ≠ (not equal to), ≤ (less
than or equal to), ≥ (greater than or equal to).
Creating a New Program
1. Select NEW from the program menu and press [ ].
2. Select the calculation mode you want the program to run in and press
[ ].
3. Select one of the ten program areas (P0123456789) and press [ ].
4. Enter your program’s commands.
• You can enter the calculator’s regular functions as commands.
• To enter a program control instruction, press [ 2nd ] [ INST ] and
make your selection.
• To enter a space, press [ ALPHA ] [ SPC ].
5. A semicolon (;) indicates the end of a command. To enter more than
one command on a command line, separate them with a semicolon. For
example:
Line 1:
INPUT A ; C = 0.5 × A ; PRINT ” C = ” , C ; END
You can also place each command or group of commands on a
separate line, as follows. In this case, a trailing semicolon can be
omitted.
Line 1:
INPUT A ; C = 0.5 × A [ ]
Line 2: PRINT ” C = ” , C ; END
Executing a Program
1. When you finish entering or editing a program, press [ CL /
ESC
] to return
to the program menu, select RUN and press [ ]. (Or you can press
[ PROG ] in MAIN mode.)
2. Select the relevant program area and press [ ] to begin executing
the program.
3. To re-execute the program, press [ ] while the program’s final
result is on the display.
4. To abort the execution of a program, press [ CL /
ESC
]. A message
appears asking you to confirm that you want to stop the execution.
STOP : N Y
Press [ ] to move the cursor to Y and then press [ ].