HP 30b Business Professional Calculator - Manual (Page 92)

Programming 84
Messages
The MSG function is used to display messages on screen; it is especially useful when used
before halting the program with (HOLD) , as it allows you to display messages
on the screen for the user.
To enter a message while creating a program:
Press
:
(HOLD) . Release both keys. You can now enter messages.
In this mode, you may press
>
or
<
to select a character and
:
(HOLD)
>
or
<
to jump 10 characters at a time. Once you have found the desired character, press
t
to validate and move to the next character. Press
{
to remove the last character.
There are also shortcuts for commonly used characters:
•
0
-
9
selects the corresponding numeric character
•
.
selects ?
•
=
selects =
•
/*+-
are shortcuts for the corresponding mathematical operator signs
•
}
selects space
Once the character appears, press
t
to validate. Press
O
to exit message entry.
If you want to modify a message that has been entered in a program, select the message and
press
:
(HOLD) message mode.
As an example using the message mode, let’s return to our sphere calculation program:
1.
:EI
opens the Program menu, and you are now at step 1 of Program
0. To insert a message at step 1 and push everything else down, simply begin editing at
step 1. If you want to delete the current step, press
{
.
2. Press
:
(HOLD) .