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Section 8: Programming Basics 107
File name: hp 12c pt_user's guide_English_HDPMF123E27 Page: 107 of 275
Printed Date: 2005/8/1 Dimension: 14.8 cm x 21 cm
Example:
Run the program created above to calculate the net cost of a typewriter
listing for $625 and an executive chair listing for $159.
Keystrokes
(RPN mode)
Display
fs
155.00
Sets calculator to Run mode. Display
shows number previously calculated.
f]
155.00
Sets RPN mode.
625
625.
Keys in price of typewriter.
t
473.75
Net cost of typewriter.
159
159.
Keys in list price of chair.
t
124.25
Net cost of chair.
Keystrokes
(ALG mode)
Display
fs
155.00
Sets calculator to Run mode. Display
shows number previously calculated.
f[
155.00
Sets ALG mode.
625
625.
Keys in price of typewriter.
t
473.75
Net cost of typewriter.
159
159.
Keys in list price of chair.
t
124.25
Net cost of chair.
That’s all there is to creating and running simple programs! But if you want to use
programs frequently, you’ll want to know more about programming — such as
how to check what keystrokes are stored in program memory, how many
keystrokes can be stored in program memory, how to correct or otherwise modify
programs, how to skip keystrokes when running a program, and so on. Before you
can understand these aspects of programming, we need to briefly discuss how
keystrokes are treated by the calculator when they are stored in Program mode
and when they are executed in Run mode.