Casio Fx-260 Manual de usuario

NQPOR

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fx-82SOLAR

fx-85B

fx-260SOLAR

fx-280

•••••••••••••••••••

•••••••••••••••••

••••••••••••••••

fx-82SOLAR/

fx-260SOLAR

fx-85B/fx-280

ENGLISH

ESPAÑOL

FRANÇAIS

DEUTSCH

110

ITALIANO

147

— 1 —

Contents

Handling Precautions … 2

Modes … 3

Basic Calculations … 5

Constant Calculations … 6

Memory Calculations … 7

Fraction Calculations … 9

Percentage Calculations … 10

Scientific Function Calculations … 11

Statistical Calculations (SD Mode) … 18

Technical Information … 21

CASIO ELECTRONICS CO., LTD.

Unit 6, 1000 North Circular Road,

London NW2 7JD, U.K.

— 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 temperatures, 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 opera-

tions are being performed correctly.

•Never leave the dead battery (fx-85B/fx-280) in the battery

compartment. It 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 deter-

gent 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 (fx-85B/fx-

280), or insufficient light. The user should prepare physical

records of data to protect against such data loss.

•Never dispose of battery (fx-85B/fx-280), the liquid crystal

panel, or other components by burning them.

•Before assuming malfunction of the unit, be sure to care-

— 3 —

fully reread this manual and ensure that the problem is not

due to low battery power (fx-85B/fx-280) 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

COMP

DEG

RAD

GRA

FIX

SCI

Application

NORM

— 4 —

Note!

•Amode guide is located at the top of the display screen.

•DEG, RAD, and GRA modes can be used in combination

with COMP and SD modes.

•F9 does not exit SD mode.

•F0 exits SD mode.

•F0 does 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: 234.553

23 +4.5 ,53 =

•Example 2: 56(12)(2.5)

56 -12 E\2.5 E=

•Example 3: 23(11020)

2 \3 -1 e20 =

•Example 4: 7845=36

7 -8 ,4 -5 =

•Example 5: =0.3

4 -5 \6 AN=

•Example 6: 2[76(54)]122

2 -O7 +6 -

O5 +4 PP=

•You can skip all Poperations before the =key.

122.

0.3

45

36.

–25.5

6.66666666719

268.8

— 6 —

•Example 7: 4/3π53

4 \3 -Ax-5 AN=

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: 2.33, then 2.36

(2.33) 2.3 ++3 =

(2.36) 6 =

•Example 2: 122.3, then 12(9)

(122.3) 12 --2.3 =

(12(9)) 9 E=

•Example 3: 1717171768

(1717) 17 ++=

(171717) =

(17171717) =

523.5987756

K8.3

K27.6

K–108.

K5.3

K34.

K68.

K51.

— 7 —

K2.89

K4.913

K8.3521

•Example 4: 1.748.3521

(1.72)1.7 --=

(1.73)=

(1.74)=

Memory Calculations

•Use the COMP mode for memory calculations.

•Use AY, |, A{and Zfor memory calculations.

AYreplaces current memory contents.

•“M” appears when there is a value in memory.

•Toclear memory, press 0AYor tAY.

•Example 1: (536)(238)(562)(994)210.75

(536) 53 +6 =AY

(238) 23 ,8 |

(562) 56 -2 |

(994) 99 \4 |

(Memory recall) Z

•Example 2: To calculate the following using memory as

shown.

M59.

M15.

M112.

M24.75

M210.75

— 8 —

•Example 3: To calculate the following using memory and

a constant: (123)(453)(783)135.

(123) 3 --12 =AY

(453) 45 A{

(783) 78 |

(Memory recall) Z

kAdditional fx-85B/fx-280 Memory Calculations

•The fx-85B/fx-280 has two additional memories named A

and B.

•Use AJto store data and 0to recall data.

•Storing data in a memory replaces anything stored there

previously.

•Toclear a memory, store a zero in it.

•Example 1: To input 123 in memory A.

t123 AJ1

MK 135.

MK 234.

MK 135.

M13.

MK 36.

123.

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