HP -25 Owner's Handbook Manual page 99

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Set the PRGM-RUN switch to PRGM erou [[[[EM =~ , press [
[Prcw | , and key in this mistake-ridden second program now.
To correct the program, press g three times to display step
02. Then correct the first mistake by keying in the correct keys
for step 03.
Press
Display
02
03
First display this step.
B
03
15 22
Then press the correct keys for
step 03.
With step 03 displayed you are ready now to correct step 04.
Since this is an unwanted extra step, use the [£J
function
to replace its contents.
Press
Display
03
15 22
Display step 03 to correct step 04.
B
Press[E] [Nopso that the calcu-
lator will not perform an opera-
tion here.
Now set the PRGM-RUN switch back to RUN rrou BT ~ov
and press [
to reset the calculator to step 00. The ex-
ample below will help you determine whether or not you have
corrected the program.
Example. Find the cube root of 8 and then of 125.
Press
Display
8 (]
125 58]
Adding Instructions
If you have recorded a medium-sized program and haveleft out
a crucial sequence of keystrokes right in the middle, you do not
have to start over. The missing sequence of keystrokes can be
recorded in the available steps following your program. You
can then use the [ key to make an unconditional branch to the
sequence when it is needed and then make a second uncondi-
tional branch back to the main part of your program at the end
of the sequence.

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