5
5. EXPONENT DISPLAY
<Example>
0.32 191.6
(FIX mode TAB = 3)
(SCI mode)
(ENG mode)
(normal mode)
The distance from the earth to the sun is approx. 150,000,000 (1.5 x 10
8
) km. Values
such as this with many zeros are often used in scientific calculations, but entering the
zeros one by one is a great deal of work and it’s easy to make mistakes. In such
cases, the numerical values are divided into mantissa and exponent portions,
displayed and calculated.
What is the number of electrons flowing in a conductor when
the electrical charge across a given cross-section is 0.32 cou-
lombs. (The charge on a single electron = 1.6 x 10
-19
coulombs).
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