Casio FX300ES Operating Guide - Page 16

Using Engineering Notation, Calculation History, Replay, Answer Memory Ans/Previous Answer Memory, - reset

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3 + 3 : 3 × 3 3 + 3 SW(:) 3 * 3 = 6 = 9 Using Engineering Notation A simple key operation transforms a displayed value to engineering notation. Transform the value 1234 to engineering notation, shifting the decimal point to the right. 1234 = 1234 W 1.234×103 W 1234×100 Transform the value 123 to engineering notation, shifting the decimal point to the left. 123 = 123 1W(←) 0.123×103 1W(←) 0.000123×106 Calculation History In the COMP Mode, the calculator remembers up to approximately 200 bytes of data for the newest calculation. You can scroll through calculation history contents using f and c. 1 + 1 = 2 2 + 2 = 4 3 + 3 = 6 1 + 1 = 2 2 + 2 = 4 3 + 3 = 6 (Scrolls back.) f 4 (Scrolls back again.) f 2 Note: Calculation history data is all cleared whenever you press O, when you change to a different calculation mode, when you change the display format, or whenever you perform any reset operation. Replay While a calculation result is on the display, you can press d or e to edit the expression you used for the previous calculation. 4 × 3 + 2.5 = 14.5 b 4 * 3 + 2.5 = 14.5 4 × 3 − 7.1 = 4.9 (Continuing) dYYYY- 7.1 = 4.9 Note: If you want to edit a calculation when the ' indicator is on the right side of a calculation result display (see "Reading the Display"), press A and then use d and e to scroll the calculation. Answer Memory (Ans)/Previous Answer Memory (PreAns) The last calculation result obtained is stored in Ans (answer) memory. The calculation result obtained prior to the last one is stored in PreAns (previous answer) memory. Displaying the result of a new calculation will move current Ans memory contents to PreAns memory and store the new calculation E-15

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E-15
3 + 3 : 3
×
3
3
+
3
S
W
(:) 3
*
3
=
6
=
9
Using Engineering Notation
A simple key operation transforms a displayed value to engineering notation.
Transform the value 1234 to engineering notation, shifting the
decimal point to the right.
1234
=
1234
W
1.234×10
3
W
1234×10
0
Transform the value 123 to engineering notation, shifting the decimal
point to the left.
123
=
123
1W
(
←
)
0.123×10
3
1W
(
←
)
0.000123×10
6
Calculation History
In the COMP Mode, the calculator remembers up to approximately 200 bytes
of data for the newest calculation. You can scroll through calculation history
contents using
f
and
c
.
1 + 1 = 2
1
+
1
=
2
2 + 2 = 4
2
+
2
=
4
3 + 3 = 6
3
+
3
=
6
(Scrolls back.)
f
4
(Scrolls back again.)
f
2
Note:
Calculation history data is all cleared whenever you press
O
, when
you change to a different calculation mode, when you change the display
format, or whenever you perform any reset operation.
Replay
While a calculation result is on the display, you can press
d
or
e
to edit
the expression you used for the previous calculation.
4 × 3 + 2.5 = 14.5
b
4
*
3
+
2.5
=
14.5
4 × 3 − 7.1 = 4.9
(Continuing)
d
YYYY
-
7.1
=
4.9
Note:
If you want to edit a calculation when the
'
indicator is on the right
side of a calculation result display (see “Reading the Display”), press
A
and then use
d
and
e
to scroll the calculation.
Answer Memory (Ans)/Previous Answer Memory
(PreAns)
The last calculation result obtained is stored in Ans (answer) memory. The
calculation result obtained prior to the last one is stored in PreAns (previous
answer) memory. Displaying the result of a new calculation will move current
Ans memory contents to PreAns memory and store the new calculation