LEXIBOOK SC100 Manuale utente

SCIENTIFIC CALCULATOR

LEXIBOOK SC100

INTRODUCTION

Dear Customer:

Thank you very much for purchasing our electronic calculator.

To fully utilize its features no special training is required, but we suggest you study this operation

manual to become familiar with its many abilities.

Before starting calculation, be sure to press the key and to confirm “0” is shown in the

display.

Special care should be taken not to damage the unit by bending or dropping. For example, do not

carry it in your hip pocket.

KEYS AND FUNCTIONS

Power off key

When this key is depressed, the calculator is turned off.

Automatic Power-Off Function (A.P.O.)

This calculator is automatically turned off approximately 8 minutes after the last key operation to

save the batteries.

Power on and clear/statistical calculation mode key

Push this key to turn the calculator on. It is ready for operation. When pushed during

operation it clears the calculator expect for the memory.

Statistical program will be activated by pressing + .

When the calculator is set to the statistical calculation mode through these keys the

symbol appears, and at the same time the numerical values and calculation

commands, expect for memory contents are cleared.

Meanwhile, in the statistical calculation mode the, (X M), (MR) and (M+) keys work as

the , , and keys, respectively. And pushing these keys immediately

after the key they work as the and keys.

2nd function designation key.

Degree/ Radian/ Grad selector/ angular unit conversion key used for calculation of

trigonometric, inverse trigonometric and coordinate conversion. The key changes

the angular mode.

GB 1

( Press )

Ex. DEG GRAD: Depress the key twice.

“DEG”mode - Entries and answer are in decimal degrees.

“RAD”mode - Entries and answer are in radians.

“GRAD”mode - Entries and answer are in grads.

It converts the displayed number into the value of the next angular mode.

Hyperbolic/arc hyperbolic key

Trigonometric/inverts trigonometric function key

Display format exchange / Tabulation key. When a calculation results is displayed in

the floating decimal point system pushing the key display the result in the

scientific notation system. Pushing the key once more display the result back to

floating decimal point system again.

TAB To specify the number of decimal digits in the calculation result.

Clear entry/Factorial key. Used to clear an incorrectly entered number.

ex : 123 455 456 579

Calculates the factorial of the displayed number.

Factorial of n [ n_] = n.(n-1).(n-2).......2.1

Degree/minute/second Decimal degrees conversion / hexadecimal number

key . To convert degree/minute/second to decimal degree

and vice versa. Hexadecimal number “D”key (effective onlyin hexadecimal number

model - HEX mode).

Natural logarithm/antilogarithm and hexadecimal number key

Used to obtain the logarithm with the base e (e=2.71828828)

Calculates the antilogarithm with the base e of the displayed number.

HEX mode

Hexadecimal number “E”key.

Common logarithm/antilogarithm and hexadecimal number key

Used to obtain the logarithm with the base of 10.

Calculates the antilogarithm with the base of 10.

Real number enter/coordinate conversion key. is used when the real parts of

complex number are to be inputted and when calling the real parts of calculation

results. is used during coordinates conversions when the X coordinates of

the Rectangular coordinates (X_Y) is input or when the r of the polar coordinates

(r) is input. It is also used for calling the calculates values of X or r.

GB 2

Converts rectangular coordinate into polar coordinate.

Imaginary number enter/coordinates conversion key. is used when the

imaginary parts of complex numbers are to be input and when calling the imaginary

parts of the calculation results. is used during coordinates conversions when

the Y coordinates of the Rectangular coordinates (X_Y) is input or when the _of the

polar coordinates (r ) is input. It is also used for calling the calculated values of

Y or .

Converts polar coordiante into rectangular coordinate.

Right shift/complex number mode key

Example

Key in Display

1. 123456 1234.

45 12345

2. 5 EXP 24 5.00

35 5.35

CPLX Used to set the complex number mode.

Enter exponent/Pi and hexadecimal number key

Press to enter number in scientific notation.

The constant π( π= 3.141592654) is entered.

Raizes a number to a power

Calculates the Xth root of y.

Calculates the square root of the number dispalyed.

Calculates the cube root of the number displayed.

Square/reciprocal key

Calculates a square of the number displayed.

Open parenthesis/exchanged key

Used to open parenthesis.

Used to exchanged the number being displayed with the number

stored in the working register. (x y).

Close parenthesis/statistical calculation key

Used to close parenthesis.

Display the number of samples entered. (n)

GB 3

Used to obtain the sum of the data ( )

Number keys

Division/binary number mode key

Used to set the binary system mode.

Converts the number displayed into the number in base 2.

Multiplication/octal number mode key

Used to set the octal system mode.

Converts the number displayed into the number in base 8.

Minus/hexadecimal number mode key

Used to set the hexadecimal system mode.

Converts the number displayed into the number in base16.

Plus/decimal number mode key

D: Press for hexidecimal number “D”

E: Press for hexidecimal number “E”

F: Press for hexidecimal number “F”

A: Press for hexidecimal number “A”

B: Press for hexidecimal number “B”

C: Press for hexidecimal number “C”

Depressed for addition.

Used to set decimal system mode (normal mode).

Converts the number displayed into the number in base 10.

Memory-in/statistical calculation key

Clears the number in the memory and then store the number being displayed in the

memory. To clear the memory depress the key and then the key.

Used to obtain the mean value of the data.

Used to obtain the sum of square of data.

Recall memory/statistical calculation key

Display the contents of the memory. The contents of the memory remain

unchanged after this key operation.

Used to obtain the standard deviation of the sample.

Used to obtain the standard deviation of the population.

Memory plus/DATA CD key. Used to add the number being displayed or calculated

result to the contents of the memory. When subtracting a number from the memory,

depress the and keys in this order.

GB 4

Used to enter the data (numbers)

Used to correct the mis-entry. (Delete function)

Change sign key

Example: 5 -5

Decimal point/random number key

Example: 12.3

0.7

These keys are used to generate uniform random number from 0.0000 to 0.999

Note: Random number generation is not possible when binary/octal/hexadecimal system mode is

set.

Equals/percent key

Used for the percentage calculation and add-on/discount calculation.

DISPLAY

1. Display format

2. Symbols

Minus symbol

Indicates that the number in the display following the “-”is a negative.

Memory symbol

Appears when a number is stored in the memory.

Error Symbol

Appears when a overflow or an error is detected.

2nd function designation symbol

Appears when the 2nd function is designated.

Hyperbolic function designation symbol

Appears when hyperbolic function is designated.

Degree mode symbol

Appears when the degree mode is designated or shows that angular mode of the

converted results is in degree.

Radian mode symbol

Appears when the radian mode is designated or shows that the angular mode of the

converted results is in radian.

GB 5

GB 6

Grad mode symbol

Appears when the grad mode is designated or shows that the angular mode of the

converted result is in grad.

Parenthesis symbol

Appears when a calculation with parenthesis is performed by depressing the ( key.

Appears when the binary system mode is set or shows the displayed number as a binary

number.

Appears when the octal system mode is set or shows the displayed number as an octal

number.

Appears when the hexidecimal system mode is set or shows the displayed number as a

hexidecimal number.

Appears when the complex number mode is set.

Appears when the statistical calculation mode is set.

3. Display system

This machine displays a calculation result (x), if it is within the following range, in the floating

decimal point system.

0.000000001 ≤1 x 1 ≤9999999999

And otherwise the machine displays x in the scientific notation system.

However a calculation result within in the above range is also capable of being display in the

scientific notation system by pressing the key.

Ex : 0.055555555

5.5555555-01

0.055555555

This is determined by the calculator in the form of 5.55555555556 x 10-2

When changed to the floating decimal display, the rounded parts may not be displayed as in this

example.

GB 7

BATTERY REPLACEMENT

If the displayed becomes dark or dim, replace the battery with new ones according to the following

procedure.

Battery: G10 x 2

1. Turn off the calculator.

2. Remove the battery cover.

3. Replace the batteries. (+side must be up)

4. Push in the battery cover.

5. After the replace, press the and keys in this order to clear the calculator. When

the batteries are correctly installed “DEG 0”will be displayed. (if the display shows nothing or a

meaningless symbol, or the keys become inoperative, remove the battery and install them again.

Press and keys in this order and check the display again.

Note: - wipe off the surface of the new batteries with cloth and then install the batteries. Always

replace both of the batteries at the same time.

WARRANTY

This product is covered by our standard 2-year manufacturer warranty. In the case of any fault,

please return the unit to the address below for replacement or repair. A copy of your sales receipt

must be provided, or other proof of purchase. This warranty does not cover damage or faults

occurring through misuse, damage or abuse. This does not affect your statutory rights.

Return/Warranty address:

Lexibook UK Limited

PO Box 66

Bordon

Hants

GU35 0ZN

England

Freephone Help Line: 0808 100 3015.

Web: http://www.lexibook.com

Email: [email protected]

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