Datexx DS-736II Manuale utente

OWNER’S MANUAL

Please read before using

BIG Display 12 - Digit

Scientific Calculator

with

Fractional and Statistical

Functions

D S - 736II

Be sure to read the following safety precautions before

usign this calculator. Keep this manual handy for later

referenxce.

This symbol is used to indicate information that can

result in personal injury or material damage if ignored.

After removing the batteries from the calculator. Put

them in a safe place where there is no danger of

them getting into the hands of small children and

accidently swallowed.

Keep batteries out of the reach of small children. If

accidently swallowed, consult with a physician im-

mediately.

Never charge batteries, try to take batteries apart or

allow batteries to become shorted. Never expose

batteries to direct heat or dispose of them by

incineration.

Misuse of batteries can cause them to leak acid that

can cause damage to nearby items and creates the

possibility of fire and personal injury.

Always make sure that a battery's positive and

negative sides are facing correctly when you

load it into the calculator.

Remove the batteries if you do not plan to use the

calculator for a long time.

Use only the type of batteries specified for this cal-

culator in this manual.

Never dispose of the calculator by burning it. Doing

so can cause certain components to suddenly burst.

creating the danger of fire and personal injury.

The displays and illustrations (such as key markings)

shown in this Use's Guide are for illustrative pur-

poses only, and may differ somewhat from the actual-

Items they represent.

The contents of this manual are subject to change

without notice.

Caution

Batteries

Disposing of the Calculator

Safety Precautions

Be sure to use a thin pointed object to press the

RESET button on the back of the calculator before

using it for the first time.

Be sure to press the ON key before using the calcu-

lator for the first time.

Even if the calculator is operating normally, replace the

battery at least once every two years.

The battery that comes with this unit discharges

slightly during shipment and storage. Because

of this, it may require replacement sooner than the nor-

mal expected battery life.

Low battery power can cause memory contents to

become corrupted or lost completely. Always keep

written records of all important data.

Avoid use and storage in areas subjected to tempera-

ture extremes.

Avoid use and storage in areas subjected to large

amounts of humidity and dust.

Dead battery ca leak, causing damage to and malfunc-

tion of the calcuator. Never leave the dead battery in the

calculator.

Very low temperatures can cause slow display response,

total failure of the display, and shortening of battery life.

Also avoid leaving the calculator in direct sunlight, near

a window, near a heater or anywhere else it might be-

come exposed to very high temperatures. Heat can

cause discoloration or deformation of the calculator's

case, and damage to internal circuitry.

Take care never to leave the calculator where it might

be splashed by water or exposed to large amounts of

humidity or dust. Such elements can damage internal

circuitry.

Avoid carrying the calculator in the pocket of your trou-

sers or other tight-fitting clothing where it might be sub-

jected to twisting or bending.

Never drop the calculator or otherwise subject it to

strong impact.

Never twist or bend the calculator.

Never try to take the calculator apart.

Handling

Precautions

Pen or other pointed object.

Use a soft, dry cloth to clean the exterior of the unit.

If the calculator becomes dirty, wipe it off with a

cloth moistened in a weak solution of water and a mild

neutral household detergent. Wring out all excess mois-

ture before wiping the calculator. Never use thinner.

benzine or other volatile agents to clean the calculator.

Doing so can remove printed markings and damage the

case.

Never press the keys of the calculator with a ball-point

Safety Precautions 1

Handling Precautions 2

Two-Line Display 6

Before Starting Calculations 6

Modes

Input Capacity

Making Corrections During Input

Replay Function

Error Locator

Exponential Display Formats

Answer Memory

Basic Calculations

Memory Calculations

Independent Memory

Variables

Fraction Calculations

Decimal-to-Fraction Conversions

Fraction-to-Decimal Calculations

Percentage Calculations

Scientific Function Calculations

Trigonometric/Inverse Trigonometric Funtions

Contents

Two-Line Display

You can simulaneously checkthe calculation

formula and itsanswer.

The first linedisplays the calculationformula.

The second linedisplays the answer.

Before Starting Calculations...

Modes

Application

Calculation modes

Normal calculations

Standard deviation

Calculations

Regression

calculations

Angle unit modes

Degrees

Radians

Grads

Display modes

Exponential notation

(Canceling FIX and

SCL

Specification)

Number of dicimal

Place specification

Mode

Name

Mode

Indicator

COMP

SD SD

REG REG

REG

RAD

GRA

NORM

FIX FIX

Note!

Mode indicators appear in the lower part of the

display.

The COMP, SD, and REG modes can be used

in combination with the angle unit modes.

Be sure to check the current calculation modes

(SD,REG,COMP) and angle unit mode

(DEG,RAD,GRA) before beginning a

calculation

Input capacity

The memory area used for calculation input

can hold 100 "steps." Whenever you input the

100rd step of any calculation: the cursor

changes from "-" to " " to let you know

memory is none. if you still need to input more,

you should divide your calculations into two or

more parts.

Making Corrections During Input

Use and to move the cursor to the

location you want.

Press to delete the number of function

at the current cursor position.

Press to change to an insert cursor

Inputting something while the insert cursor is

on the display inserts the input at the insert

cursor position.

Press , , or returns to the

normal cursor from the insert cursor.

Replay Function

Pressing or recalls the last calculation

you performed. You can then make any

changes you want in the calculation and re-

execute it.

Pressing does not clear replay memory, so you can

SCI SCI

Number of significant

digit specification

DEL

INS

SHIFT

INS

SHIFT =

recall the last calculation even after you press

Replay memory is cleared whenever you start a new

calculation, change to another mode, or turn off power.

Error Locator

Pressing or after an error occurs displays the cal-

culation with the cursor positioned at the location where

the error occurred.

Exponential Display Formats

This calculator can display up to 10 digits. Larger values

are automatically displayed using exponential notation.

Answer Memory

Whenever you press after inputting values or an ex-

Pression, the calculated result is automatically stored in

Answer Memory.You canrecall Answer Memorycontents

by pressing .

Answer Memory can store up to 12 digits for the mantissa

and two digits for the exponent.

Answer Memory contents are not changed if the opera-

tion performed by any of the above key operations re-

sulis in an error.

Ans

Use the COMP mode for basic calculations.

: 3X(5X10 )

Example 1 -9

Example 2 : 5X(9+7)

You can skip all operations before .

()=

EXP

(-)

59 1.5-08

()

)

980.

Basic Calculations

Memory Calculations

Values are automatically displayed in decimal format

whenever the total number of digits of a fractional value

(integer + numerator + denominator + separator marks)

data assigned to variable A.

Example:

193.2 23 = 8.4

193.2 28 = 6.9

Use the COMP mode for fraction calculations.

Fraction Calculations

Values can be input directly into memory, added to

memory, or subtracted from memory. lndependent

momory is convenient for calculating cumulative totals.

lndependent memory uses the same memory area as

variable M.

To clear independent memory (M), input .

2 3 + 9 = 3 2 2 3

There are nine variables (A through F, M, X and Y),which

can be used to store data, constants, results, and othes

values.

Use the following operation to delete data assigned to all

nine variables : .

Use the following operation to delete data assigned to a

particular variable: This operation deletes the

Independent Memory

Variables

Example:

STO

32.

47.

90.

11.

STO

Mcl

SHIFT

RCL

M+

53 6 = 47

) 45 X 2 = 90

(Total) 11

45 2

SHIFT

STO

193.2 23

28 6.9

8.4

Fraction Calculations

ALPHA

e xceeds 10.

Fraction/decimal calculation results are always decimal.

Example: 2.75

Decimal-to-Fraction Conversion

Fraction-to-Decimal Conversion

Example 2 :

Example1:2

1.6

1.6 2.1

15.

SHIFT

d/c

2.75

Example:

0.5 (Fraction Decimal)

Use the COMP mode for percentage calculations.

1:To calculate 12% of 1500

2: To calculate what percentage of 880 is 660

=3.14159265359

Example

Use the COMP mode for scientific function calculations.

Scientific Function Calculations

0.5

Percentage Calculations

Indice

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