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22 Section 1: Getting Started
File name: hp 12c pt_user's guide_English_HDPMF123E27 Page: 22 of 275
Printed Date: 2005/8/1 Dimension: 14.8 cm x 21 cm
Simple Arithmetic Calculations in ALG Mode
In ALG mode, any simple arithmetic calculation involves two numbers and an
operation — addition, subtraction, multiplication, or division. To do such a
calculation on your hp 12c platinum, you tell the calculator the first number, then
the operation to be performed, and then tell the calculator the second number. The
answer is calculated when the equals key (
}
) is pressed.
For example, to calculate 21.1 + 23.8, do the following:
Keystrokes
(ALG mode)
Display
OO
0.00
Clears any pending operations.
21.1
+
21.10
Keys in the first number and
prepares to add the second.
23.8
23.8
Keys the second number.
}
44.90
}
completes the calculation.
Once a calculation has been completed:
z pressing another digit key starts a new calculation, or
z pressing an operator key continues the calculation.
Keystrokes
(ALG mode)
Display
OO
0.00
Clears any pending operations.
77.35
-
77.35
90.89
}
–13.54
}
completes the calculation.
65
gr§
12
}
96.75
New calculation:
1265 ×
z
3.5
}
27.64
Calculates 96.75 ÷ 3.5
You can also do long calculations without pressing
}
after each intermediate
calculation: just press it at the end. The operators perform from left to right, in the
order you enter them. Note that if you have just pressed
}
, there is no need to
press
OO
before starting a new calculation – the
}
key will have completed
any pending operations.