HP 0012C-90001 User Manual page 25

Storage register arithmetic is possible with only registers R
Example: Example: In the example on page 20, we updated the balance in your checkbook. Example: Example:
Let's suppose that because data is stored indefinitely in your calculator's
Continuous Memory, you keep track of your checking account balance in the
calculator. You could use storage register arithmetic to quickly update the balance
after depositing or writing checks.
Keystrokes Keystrokes
Keystrokes Keystrokes
58.33?0
22.95?-0
13.70?-0
10.14?-0
1053?+0
:0
Section 1: Getti i i i ng Started Section 1: Gett
Section 1: Gett Section 1: Gett
Display Display
Display Display
58.33
Stores the current balance in register
R .
0
22.95
Subtracts the first check from the
balance in R
continues to show the amount
subtracted; the answer is placed only
in R .
0
13.70 Subtracts the second check.
10.14
Subtracts the third check.
1,053.00
Adds the deposit.
1,064.54
Recalls the number in R
new balance.
ng Started
ng Started ng Started
through R
0 4 .
. Note that the display
0
to check the
0
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