HP 30b Business Professional Calculator - Manual (Page 88)

Programming 80
The Program Menu and Program Editing
Now that we have been through some short examples, let us look at some of the programming
details.
The Program menu displays a list of the ten programs that are in the calculator. Use the
>
and
<
keys to scroll through the program menu. For each program, the number displayed
at the bottom is the memory space used/occupied by the program and a checksum value of
that program. For example, program 0 for the sphere uses 13 bytes and has a checksum of
104 (see Figure 2).
Figure 2
There are 290 bytes of program space available.
To erase all the programs, open the Reset menu (press
:x
) from outside of program
mode. In the reset menu, select Prgm. The number at the bottom of the display represents the
amount of programming steps in use. Press
I
twice to erase all programs.
To erase a specific program, go to the program menu, select the program with the
<
or
>
keys, and press
:xI
to erase that specific program.
To execute a program, select the program in the program menu and press
=
.
To edit or modify an existing program, select the program in the program menu and press
I
:
1. Review your program by pressing the
<
or
>
keys.
2. Delete the currently displayed instruction by pressing
{
.
3. Exit the program by pressing
O
or
:E
.
4. Any other key that you press will be inserted as an instruction in the program.
5. Insert an
>
,
<
,
O
, or
{
instruction by pressing
:
(HOLD) and
>
,
<
,
O
, or
{
.
Note: you can
(HOLD) (HOLD)
followed by a label number to go
to a specific label.