HP 12C Platinum Instruction Manual page 3

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HP 12C Platinum Using Memories to Solve Problems
Figure 3 shows all valid keystrokes:
Example 2: The index for conversion between American Dollars and Euros has its valued raised by 1%. What is the
keystroke sequence that updates the index in register R
Solution: When the keystrokes below are used, the index is updated in R
illustrates what happens with the register contents when ?§1 is performed.
1.01 ?§1
Display contents: typed in value
Value already stored in R
If it is necessary to check the resulting value stored in R
keystroke sequence must be used to bring its contents to the display:
:1
To check the significant digits (mantissa) of the value already in the display, the following keystroke
sequence can be used:
fX
Answer: Now the relationship is set to 1.00 Euro = US$1.20.
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z
§
?
-
+
?§1
1
- 3 -
0
1
2
3
Figure 2
4
?
1
. The diagram shown in Figure 4
1
Display contents remain unchanged
Updated value in R1: 1.19 + 1%
Figure 3
or use it in further calculations, the following
1
Figure 4
Figure 5
HP 12C Platinum Using Memories to Solve Problems - Version 1.0