Casio FX-180PA Manual page 6

Independent memory in key
Press
® to store the displayed value into the independent memory. The previous value
in the memory will be automatically erased.
M+,
EIW OM
Memory plus and memory minus keys
Press ) J to add the displayed value to the value in the independent memory. Press ® Q
to subtract the displayed value from the value in the independent memory.
M+ ( ® ~) also obtains an answer of 4 basic calculations, x' and x'S, and automatically
adds (subtracts) it to (from) the contents of the independent memory. The answer obtained
by this addition or subtraction will be the new value in the memory.
~
Constant memory recall key
Press
to recall the contents of the constant memories 1 through 6. To recall a value
stored in constant memory 5, for example, press: .
Constant memory in key
Press ® to store the displayed value into constant memories 1 through 6. To store 12.3
into constant memory 3, for example, press: 12.3®I3.
Special Keys
Parentheses keys
This calculator calculates in this order: 1) functions, 2) x' and x' , 3) multiplication and
division and 4) addition and subtraction. To change this order enclose the parts that must
be calculated first with ® and l (. In a single expression, a maximum of 18 nesting paren-
theses at 6 levels can be used.
P Exponent key
To enter a number in scientific notation, press the correct numbers for the mantissa, aP
and the correct numbers for the exponent.
Pi key
Press
to display the value of a (ratio of the circumference of a circle to its diameter
- 3.141592654).
=
®
Sexagesimal notation/decimal notation conversion keys
To change from sexagesimal (base 60) notation (degree, minute, second) to decimal no-
tation (degree), enter the degree, press , enter the minute, press El, enter the second
and press
. To change from decimal notation to sexagesimal notation, press the cor-
rect number keys for the degree and then press
Register exchange key
Press
® to exchange the displayed value (X-register) with the contents of the work-
ing register (Y-register). Press
® again to exchange them again, so that the value
that had been displayed previously is displayed again.
Ix..KI Register exchange key
To exchange the displayed value (X-register) with the content of a constant memory (K-
register), press ® El I. Press the same keys again to display the originally displayed value.
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