Casio FX-CG20 Calculator User Manual


 
CASIO
1-6
k About Display Screens
This calculator uses two types of display screens: a text screen and a graph screen. The
text screen can show 21 columns and 8 lines of characters, with the bottom line used for the
function key menu. The graph screen uses an area that measures 384 (W) × 216 (H) dots.
Text Screen Graph Screen
k Normal Display
The calculator normally displays values up to 10 digits long. Values that exceed this limit are
automatically converted to and displayed in exponential format.
u How to interpret exponential format
1.2
E
+12 indicates that the result is equivalent to 1.2 × 10
12
. This means that you should move
the decimal point in 1.2 twelve places to the right, because the exponent is positive. This
results in the value 1,200,000,000,000.
1.2
E
–03 indicates that the result is equivalent to 1.2 × 10
–3
. This means that you should move
the decimal point in 1.2 three places to the left, because the exponent is negative. This results
in the value 0.0012.
You can specify one of two different ranges for automatic changeover to normal display.
Norm 1 ................... 10
–2
(0.01) > | x |, | x | > 10
10
Norm 2 ................... 10
–9
(0.000000001) > | x |, | x | > 10
10
All of the examples in this manual show calculation results using Norm 1.
See page 2-13 for details on switching between Norm 1 and Norm 2.