Datexx ECO-CALC DS-700 Bedienungsanleitung

Owner's Manual

SCIENTIFIC

CALCULATOR

DS-700

Please read before operating the unit

This Datexx DS-700 Scientific

Calculator is designed for a variety of

scientific, statistical and computer

uses. It provides many important

functions necessary for complex cal-

culations.

FEATURES

Removable protective cover doubles

as a base for the calculator.

Large easy to read LCD (Liquid

Crystal Display).

Binary-Octal-Hexadecimal-Decimal

conversion.

Built-in Random Number Generator.

Built-in Trigonometric and Algebraic

Functions.

TABLE OF CONTENTS

(LCD)

Liquid Crystal Display Format

.....4

DisplaySymbols.................4

Setting Display Format............. . ....7

OperatingtheCalculator...........9

OneFactorOperations...........21

TwoFactorOperations...........21

CorrectingIncorrectEntries......22

CorrectingOverflowErrors........23

Scientific Notation...............25

Percentage.................... 26

Logarithm and Exponential.......26

Trigonometric Calculations........27

Applications and Examples.......28

Business......................28

Physics........................28

Civil Engineering................29

Electronics..................... 30

Parallel Resistance..............31

Care and Maintenance ..........32

Replacing The Batteries..........33

2 3

HYP Hyperbolic function

designation symbol

Appears when a hyperbolic function is

designated.

DEG Degree mode symbol

Appears when degree mode is desig-

nated or shows that the angular mode

of the converted result is in degrees.

RAD Radians mode symbol

Appears when radian mode is desig-

natedorshowsthattheangular

mode of the converted result is in radi-

ans.

GRAD Grad mode symbol

Appears when grad mode is designat-

ed or shows that the angular mode of

the converted result is in grads.

( ) Parenthesis symbols

Appears when a calculation with

parenthesis is performed by pressing

the parenthesis key.

(LCD) LIQUID CRYSTAL DISPLAY FORMAT

FLOATING POINT DISPLAY

SCIENTIFIC NOTATION DISPLAY

DISPLAY SYMBOLS

– Negative symbol

Indicates the displayed number is a

negative number.

M Memory symbol

Appears when number is stored in

memory.

2ndF Second function symbol

Appears when 2ndF is pressed,

allowing access to alternate key func-

tions.

SETTING UP DISPLAY FORMAT

Display Format

Press TAB key to change format from

floating point to scientific notion

Change to scientific notion

Change to floating point

Setting Decimal Point

Press 2ndF, TAB and Number of digit

Example: Decimal Point 4

BIN Binary mode symbol

Appears when the binary mode is set

or the displayed result is a binary

number.

OCT Octal mode symbol

Appears when the octal mode is set or

the displayed result is an octal num-

ber.

HEX Hexadecimal mode symbol

Appears when the hexadecimal mode

is set or the displayed result is a hexa-

decimal number.

CPLX

Complex number mode symbol

Appears when the complex number

mode is set.

STAT Statistical mode symbol

Appears when the statistical calcula-

tions mode is set.

A calculated result is displayed as a float-

ing point number within the range of:

0.000000001 ≤1 x ≤9999999999

Results outside this range are displayed in

scientific notation.

Example: Decimal Point 6

Please note:

Once the decimal point is set, it will

remain after power is off, to resume

decimal point 2 (default), Please set

the decimal point to 2 again.

Example:

Setting back to Decimal Point 2

OPERATING THE CALCULATOR

Power off key

Press to turn off the calculator.

Automatically turns off 8 min-

utes after last keypress to con-

serve battery power.

Power on and clear / statisti-

cal calculation mode key

Press to turn on the calculator

or to clear the display.

Press to activate statistical

program.The display is

cleared and STAT appears in

the display. In this mode the ),

x -->m, RM and M+ keys func-

tion as the n, x, S and DATA

keys respectively. Press 2ndF

to activate the ∑x, ∑x2, Ó

and CD keys.

2nd function key

Press to use alternate func-

tions located above most

keys.

Used with trigonometric func-

tions for arc hyperbolic calcu-

lations.

Trigonometric / Inverse

Trigonometric function keys

Press for the desired trigono-

metric function. Press 2ndF

first for inverse trigonometric

functions.

Display Format Exchange /

Tabulation key

Press to change display for-

mat from floating point to sci-

entific notation and back

again.

Press 2ndF, TAB, then a digit

to specify the number of deci-

mal tab places in the dis-

played result.

Degree / Radian / Grad

selector / angular unit con-

version key

Use to calculate trigonometric

and coordinate conversion.The

DRG key changes the angular

mode with each press:

DEG -> RAD -> GRAD -> DEG.

DEG MODE - Entries and

results are in decimal degrees.

RAD MODE - Entries and

results are in radians.

GRAD MODE - Entries and

results are in grads.

Functions the same as the

DEG key.The displayed num-

ber is converted into a number

of the specified angular mode.

Hyperbolic / Arc Hyperbolic

key

Used with trigonometric func-

tions for hyperbolic calcula-

tions.

10 11

Calculates the antilogarithm

base e of the displayed num-

ber.

Common logarithm / antilog-

arithm and hexadecimal

number key

Press to obtain the base 10

logarithm of the displayed

number.

Hexadecimal number F key

(HEX mode only).

Press to obtain the base 10

antilogarithm of the displayed

number.

Real number enter / coordi-

nate conversion key

Used when the real parts of

complex numbers are entered

and when calling the real

parts of calculated results.

Clear Entry / Factorial key

Press to clear the display of

an incorrect number.

Calculates the factorial of the

displayed number.

Degree / Minutes / Second ƒ

Decimal degrees conversion

/ Hexadecimal number key

Converts degree / minute /

second to decimal degree.

Press 2ndF first to convert

decimal degree to degree /

minute second.

Hexadecimal number D key

(HEX mode only).

Natural Logarithm /

Antilogarithm number key

Used to obtain the logarithm

base e (e= 2.718281828).

Hexadecimal number E key

(HEX mode only).

12 13

Right Shift / Complex num-

ber mode key

Press to delete the last num-

ber key pressed.

Press to set the complex num-

ber mode.

Enter Exponent / Pi and

Hexadecimal number key

Press to enter a number in

scientific notation.

Hexadecimal number A key

(HEX mode only).

Displays the value of Pi (π)

Pi= 3.141592654

y /x√y and Hexadecimal

number key

Raises the displayed number

to a power.

Hexadecimal number B key

(HEX mode only).

Used during coordinate conver-

sions when entering the x coor-

dinate of the rectangular coordi-

nate (X, Y) or the r of the polar

coordinate. Also displays the

calculated values of X or r.

Press to convert polar coordi-

nates to rectangular

coordinates

Imaginary number enter /

coordinate conversion key

Press to input the imaginary parts

of complex numbers or to display

the imaginary parts of a calculat-

ed result.

During coordinate conversions,

press to enter the retangular y

coordinate, or the ø of the polar

coordinates (r, ø). Also used to

display the calculated values of y

or ø.

Press to convert polar coordinates

to rectangular coordinates.

14 15

Press to enter an open paren-

thesis in the display.

Press to exchange the dis-

played number with the num-

ber from the working register

(x -> y)

Close parenthesis / statisti-

cal calculation key

Press to enter a close paren-

thesis in the display. In statisti-

cal mode it displays the

number of the samples

entered. (n)

Press to obtain the sum of the

data (∑x)

Calculates the Xth root of Y.

Square root / cube root and

hexadecimal number key

Calculates the square root of

the displayed number.

Hexadecimal number B key

(HEX mode only).

Calculates the cube root of the

displayed number.

Square / reciprocal key

Calculates the square of the

displayed number.

Calculates the reciprocal of

the displayed number.

Open parenthesis /

exchange key

16 17

Plus / Decimal number key

Press for addition.

Press to convert the displayed

number to a decimal number

(base 10).

Memory-in / statistical calcula-

tion key

Press to store the displayed num-

ber into memory.To clear the

memory, press the ON/C key then

the x-> m key. In statistical mode,

press to obtain the mean value of

the data.

Press to obtain the sum of

squares of the data (∑x^3)

Recall memory / Statistical cal-

culation key

Displays the contents of the mem-

ory. In statistical mode, press to

obtain the standard the deviation

of the data simple.

Press to obtain the standard

deviation of the population of

data.

Number keys

Press to enter number 0-9.

Division / binary number key

Press for division.

Press to convert the displayed

number to a binary

number(base 2).

Multiplication / Octal num-

ber key

Press for multiplication.

Press to convert the displayed

number to an octal

number(base 8).

Subtraction / Hexadecimal

number key

Press for subtraction.

Press to convert the displayed

number to a hexadecimal

number (base 2).

18 19

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