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Data Entry Keys
0 to 9
Numeric keys for entering data values.
Decimal point key. Enters a decimal point.
Enters the minus symbol.
The subtraction key
Enters π (3.14159...).
The constant π, used frequently in function calculations, is the ratio of the
circumference of a circle to its diameter
Pressing this key switches to scientific notation data entry.
<Example>
1.496
is not used for entering negative numbers.
Provided the earth is moving around the sun in a circular orbit,
how many kilometers will it travel in a year?
* The average distance between the earth and the sun being
1.496 x 10
km.
8
Circumference equals diameter x π; therefore,
x 2 x π
1.496 x 10
8
Operation
8
2
9
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