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Section 1: Getting Started
Section 1:
Getting Started
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20
Section 1:
Section 1:
Getting Started
Getting Started
Chain Calculations
Chain Calculations
Chain Calculations
Chain Calculations
Whenever the answer has just been calculated and is therefore in the display, you
can perform another operation with this number by simply keying in the second
number and then pressing the operation key: you need
the second number from the first. This is because when a number is keyed in after
a function key (such as +,-,
calculation is stored inside the calculator — just as when the \ key is pressed.
The only time you must press the
are keying them both in, one immediately following the other
The hp 12c is designed so that each time you press a function key in RPN mode,
the calculator performs the operation
of all intermediate calculations, as well as the "bottom line."
Example: Suppose you've written three checks without updating your checkbook,
Example:
Example:
Example:
and you've just deposited your paycheck for $1,053.00 into your checking
account. If your latest balance was $58.33 and the checks were written for
$22.95, $13.70, and $10.14, what is the new balance ?
Solution: When written down on paper, this problem would read
Solution:
Solution:
Solution:
58.33 – 22.95 – 13.70 – 10.14 + 1053
Keystrokes
Keystrokes
Keystrokes
Keystrokes
58.33
\
22.95
-
13.70
, z, etc.) is pressed, the result of that prior
\
key to separate two numbers is when you
then
— not later — so that you see the results
Display
Display
Display
Display
58.33
Keys the first number.
Pressing \ separates the second
58.33
number from the first.
22.95
Keys in the second number.
Pressing - subtracts the second
35.38
number from the first. The calculator
displays the result of this calculation,
which is the balance after subtracting
the first check.
13.70
Keys in the next number. Since a
calculation has just been performed,
do not press \; the next number
entered (13.70) is automatically
separated from the one previously in
the display (35.38).
press \ to separate
not
.
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