Casio FX250HC - Basic Scientific Calculator Bedienungsanleitung
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NQPOR
fx-82SX/
fx-250HC
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CASIO ELECTRONICS CO., LTD.
Unit 6, 1000 North Circular Road,
London NW2 7JD, U.K.
— 1 —
Contents
Handling Precautions … 2
Modes … 3
Basic Calculations … 5
Constant Calculations … 6
Memory Calculations … 7
Fraction Calculations … 8
Percentage Calculations … 10
Scientific Function Calculations … 11
Statistical Calculations (SD Mode) … 16
Technical Information … 18
ENGLISH
1
ESPAÑOL
33
FRANÇAIS
66
DEUTSCH
99
ITALIANO
134
— 2 —
Handling Precautions
•Your calculator is made up of precision components. Never
try to take it apart.
•Avoid dropping your calculator and otherwise subjecting
it to strong impact.
•Do not store the calculator or leave it in areas exposed to
high temperature or humidity, or large amounts of dust.
When exposed to low temperature, the calculator may
require more time to display results and may even fail to
operate. Correct operation will resume once the calculator
is brought back to normal temperature.
•The display will go blank and keys will not operate during
calculations. When you are operating the keyboard, be
sure to watch the display to make sure that all your key
operations are being performed correctly.
•Never leave dead batteries in the battery compartment.
They can leak and damage the unit.
•Avoid using volatile liquids such as thinner or benzine to
clean the unit. Wipe it with a soft cloth, or with a cloth that
has been dipped in a solution of water and a neutral de-
tergent and wring out.
•In no event will the manufacturer and its suppliers be liable
to you or any other person for any damages, expenses,
lost profits, lost savings, or any other damages arising out
of malfunction, repairs, or battery replacement. The user
should prepare physical records of data to protect against
such data loss.
•Never dispose of batteries, the liquid crystal panel, or other
components by burning them.
— 3 —
•Before assuming malfunction of the unit, be sure to care-
fully reread this manual and ensure that the problem is not
due to low battery power or operational error.
•The contents of this manual are subject to change without
notice.
•No part of this manual may be reproduced in any form
without the express written consent of the manufacturer.
•Keep this manual on hand for future reference.
Modes
*Display indicators show current mode setting. Absence of
display indicator indicates COMP Mode.
Key
Operation
Mode
Name*
Standard deviation calculations
Normal calculations
Calculations using grads
Calculations using radians
Number of decimal place
specification
Number of significant digit
specification
Cancels FIX and SCI settings
Calculations using degrees
F0
F4
F5
F6
F7
F8
F9
SD
COMP
DEG
RAD
GRA
FIX
SCI
Fl
Application
NORM
— 4 —
Note!
•Amode guide is located above the display screen.
•DEG, RAD, and GRA modes can be used in combination
with the COMP and SD modes.
•F9does not exit SD mode.
•F0exits SD mode.
•F0does not clear SCI or FIX specifications.
•Always press tbefore entering DEG, RAD, and GRA
modes.
•Remember to always set the operating mode and angular
unit (DEG, RAD, GRA) before starting your calculation.
— 5 —
Basic Calculations
• Use the COMP mode for basic calculations.
•Example 1: 234.553
23 +4.5 ,53 =
•Example 2: 56(12)(2.5)
56 -12 E\2.5 E=
•Example 3: 23(11020)
2 \3 -1 e20 =
•Example 4: 7845=36
7 -8 ,4 -5 =
•Example 5: =0.3
4 -5 \6 AN=
•Example 6: 2[76(54)]122
2 -O7 +6 -
O5 +4 PP=
•You can skip all Poperations before the =key.
6
45
–25.5
268.8
6.66666666719
36.
0.3
122.
— 6 —
Constant Calculations
•Press +, ,, -,or \twice after inputting a number to
make that number a constant.
• “K” is on the display while a constant is being used.
•Use the COMP mode for constant calculations.
•Example 1: 2.33, then 2.36
(2.33) 2.3 ++3 =
(2.36) 6 =
•Example 2: 122.3, then 12(9)
(122.3) 12 --2.3 =
(12(9)) 9 E=
•Example 3: 1717171768
(1717) 17 ++=
(171717) =
(17171717) =
•Example 4: 1.748.3521
(1.72)1.7 --=
(1.73)=
(1.74)=
K27.6
K5.3
K4.913
K8.3521
K2.89
K34.
K51.
K68.
K8.3
K–108.
— 7 —
Memory Calculations
•Use the COMP mode for memory calculations.
•Use Y, |, A{and Zfor memory calculations.
Yreplaces current memory contents.
•“M” appears when there is a value in memory.
•To clear memory, press 0Yor tY.
•Example 1: (536)(238)(562)(994)210.75
(536) 53 +6 =Y
(238) 23 ,8 |
(562) 56 -2 |
(994) 99 \4 |
(Memory recall) Z
•Example 2: To calculate the following using memory as
shown.
M15.
M210.75
M13.
M24.75
M112.
M59.
— 8 —
•Example 3: To calculate the following using memory and
a constant: (123)(453)(783)135.
(123) 3 --12 =Y
(453) 45 A{
(783) 78 |
(Memory recall) Z
Fraction Calculations
•Use COMP mode for fraction calculations.
•Total number of digits (including division marks) cannot
exceed 10.
•Example 1: 1
2 C3 +4 C5 =
•Example 2: 3 1 4
3 C1 C4 +
1 C2 C3 =
•Example 3: 2 C4
=
MK 234.
MK 135.
MK 36.
MK 135.
2 4.
12.
17 15.
411 12.
2
4
1
2
7
15
2
3
4
5
1
4
2
3
11
12
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