HP 12C Platinum User Manual page 120

120 Section 8: Programming Basics
Pressing the gu keys is not necessary when we do the calculations manually,
since in Run mode the result of every intermediate calculation is displayed
automatically; but we'll include gu instructions in the program so that the
intermediate results AMOUNT and TAX are automatically displayed when the
program is executed.
Keystrokes
(RPN mode)
6.75?0
fCLEAR²
13
\
68.5
Display
Stores tax rate in R
6.75
Clears the registers in R
0.00
through R
Keys in quantity of item.
13.
Separates quantity of item from
13.00
cost of item to be keyed in
next.
Keys in cost of item.
68.5
.
0
1
.
6