Sharp EL-500W Manual

Sharp Regnemaskine EL-500W

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INTRODUCTION

Thank you for purchasing the SHARP Fraction/Scientific

Calculator Model EL-500W. This calculator will help you

understand mathematical concepts behind fraction calcula-

tion, such as simplification and reduction.

After reading this manual, store it in a convenient location

for future reference.

Operational Notes

• Do not carry the calculator around in your back pocket, as

it may break when you sit down. The display is made of

glass and is particularly fragile.

• Keep the calculator away from extreme heat such as on a

car dashboard or near a heater, and avoid exposing it to

excessively humid or dusty environments.

• Since this product is not waterproof, do not use it or store

it where fluids, for example water, can splash onto it.

Raindrops, water spray, juice, coffee, steam, perspiration,

etc. will also cause malfunction.

• Clean with a soft, dry cloth. Do not use solvents or wet

cloth.

• Do not drop it or apply excessive force.

• Never dispose of batteries in a fire.

• Keep batteries out of the reach of children.

• This product, including accessories, may change due to

upgrading without prior notice.

SHARP will not be liable nor responsible for any inciden-

tal or consequential economic or property damage caused

by misuse and/or malfunctions of this product and its

peripherals, unless such liability is acknowledged by law.

♦Press the RESET switch (on the back) only in the follow-

ing cases. Note that pressing the RESET switch erases

all data stored in memory.

• Before using for the first time

• After replacing the batteries

• To clear all memory contents

• If an abnormal condition occurs and all keys are inop-

erative.

If service should be required for the calculator, use only a

SHARP servicing dealer, SHARP approved service facility,

or SHARP repair service where available.

Hard Case

DISPLAY

(All symbols will not be displayed simultaneously, as shown

above.)

:Appears when the entire equation cannot be

displayed. Press to see the remaining< >/

(hidden) section.

2ndF : Appears when @ is pressed, indicating that the

functions shown in orange are enabled.

SIMP : Indicates that a fraction can be simplified further, or

expressed with a lower denominator.

DEG/RAD/GRAD: Indicates angular units (Degrees, Radians

and Grads) and changes each time G is pressed.

’:Appears when statistical mode is selected.

M : Indicates that a numerical value is stored in the

independent memory.

BEFORE USING THE CALCULATOR

Key Notation Used in this Manual

In this manual, key operations are described as follows:

To specify π:@V

To specify Exp : E

To access functions printed in orange above keys, press @

first.

In this manual, number entry examples are shown with ordinary

numbers (i.e., “100” will be indicated instead of “10

0”).

Power On and Off

Press

to turn the calculator on, and

to turn it off.

Clearing Methods

There are three clearing methods as follows:

Clearing Entry M*1STAT, ANS*2

operation (Display)

N× ×

@c ×

RESET

: Clear × : Retain

*1Independent memory M.

*2Statistical data and last answer memory.

• .To clear the independent memory (M), press NO

Editing the Equation

• Press < or > to move the cursor.

To return to the equation after getting an answer, press

< > ( ).

• To delete a number, place the cursor on the number to be

deleted, then press d.

• To insert a number, move the cursor to the place immedi-

ately after where the number is to be inserted, then enter

the number.

15 + 8 N 15 + 8

15+8_

15 –

↓

3 <<dd

15_

- 3

15–3_

13 × 24 = N 13 * 24 =

312.

< >( )

15 ×

↓

24 = >d 5 =

360.

ESPAÑOL

(reverso)

ENGLISH

EL-500W

FRACTION/SCIENTIFIC CALCULATOR

OPERATION MANUAL

MODEL

Symbol

Mantissa Exponent

Priority Levels in Calculation

This calculator performs operations according to the following

priority:

QFunctions expressed with numerical data placed before

(such as x-1, x2, n!)

Wyx, x¿y

Eπ

RFunctions expressed with numerical data placed after (such

as (–), sin, cos)

TMultiplications with the sign “×” omitted from the front of a

function (such as 3cos20)

Yn r n rC , P

U×, ÷

I+, –

OOperations end commands (such as =, M+, %, DRG ,

DATA, CD)

• A parenthesized calculation section has precedence over

other sections of the calculation.

INITIAL SETUP

Mode Selection

Normal Mode:

Used to perform arithmetic operations and function calcula-

tions.

Statistical Mode:

Used to perform statistical operations. To enter statistical

mode, press appears on the display to@”. ’

indicate that the statistical mode is selected. To return to

normal mode, press on the display.@” with ’

’ disappears as the calculator returns to normal mode.

• The mode will remain selected when the calculator is turned

off.

• When executing mode selection, last answer memory will

be cleared.

Scientific Notation

People who need to deal with very large and very small num-

bers often use a special format called exponential or scientific

notation.

A number expressed in scientific notation has two parts. The

first part consists of a regular decimal number between 1 and

10. The second part represents how large or small the num-

ber is in powers of 10.

While a calculation result is displayed in the floating point

system, press to display the result in the scientific@´

notation system. Pressing @´ once again will bring

back the floating point system.

To enter a number in scientific notation, press E.

(1.2 × 10

) × (1.5 × 10

) 1.2

1.5

1.8

1025

3 ÷ 7 =

[Floating point] N 3 / 7 =

0.428571428

→ [Scientific notation] @´

4.285714286

10–01

[TAB set to 2] @i 2

4.29

10–01

→ [Floating point] @´

0.428571428

• Use @´ to switch to the scientific notation, press

@i, then give a value between 0 and 9 to set the

decimal placement. To reset, press 9.@i

• The number will be displayed in scientific notation if the

floating point value does not fit in the following range:

0.000000001 ≤ | x | ≤ 9999999999

• The last decimal digit in scientific notation will be rounded

off.

Determination of the Angular Unit

In this calculator, the following three angular units (degrees,

radians, and grads) can be specified.

SCIENTIFIC CALCULATIONS

• Select the normal mode.

• In each example, press Nto clear the display before

performing the calculation.

Arithmetic Operations

12+16 3=×N 12 + 16 * 3 =

60.

350–120÷4= 350 - 120 / 4 =

320.

72×(-12)–150= 72 *– 12 - 150 =

–1014.

(5+21) (30–16)=×( 5 + 21 )*

( - 30 16 )=

364.

(6 10×

)÷(2 10×

-4

( E 6 3 )/

( 2 E– )= 4

30000000.

Constant Calculations

In constant calculations, the addend becomes a constant.

Subtraction and division are performed in the same manner.

For multiplication, the multiplicand becomes a constant.

245+60= N 245 + 60 =

305.

12+60= N 212 + 60 =

72.

150–20= 150 - 20 =

130.

250–20= 250 - 20 =

230.

200÷4= 200 / 4 =

50.

180÷4= 180 / 4 =

45.

15×3= 15 * 3 =

45.

15 10=×15- 10 =

150.

Functions

• For each example, press N to clear the display.

• Before starting calculations, specify the angular unit.

• The results of inverse trigonometric functions are displayed

within the following range:

sin60[°]= Ns 60 =

0.866025403

cos–[rad]= Gu(@V/ 4

0.707106781

tan–11=[g] G@T 1 =

50.

ln 20 = @I 20 =

2.995732274

log 50 = @l 50 =

1.698970004

e3 = @e 3 =

20.08553692

Press G

DEG ( )°

GRAD RAD (g)

(rad)

θ = sin–1

θ = tan–1 xθ = cos–1

DEG –90 ≤ θ ≤ 90 0 ≤ θ ≤ 180

RAD – — ≤ θ ≤ —0 ≤ θ ≤ π

GRAD –100 ≤ θ ≤ 100 0 ≤ θ ≤ 200

101.7 = @¡ 1.7 =

50.11872336

32 + 5

2 = 3 @L @L= + 5

34.

√32 +

3√21 = @⁄ @$ 32 + 3

21 =

8.415778426

74 = 7 @™ 4 =

2401.

4! = 4 @!=

24.

10P3 = 10 @q 3 =

720.

2 = 5 @Q 2 =

10.

– = @V/ 3 =

1.047197551

– + – = 4 @• + 5 @•=

0.45

200 × 32% = 200 * 32 @%

64.

150 ÷ 300 = ?% 150 / 300 @%

50.

200 + (200 × 32%) =

200 + 32 @%

264.

300 – (300 × 25%) =

300 - 25 @%

225.

Random Numbers

A pseudo-random number with three significant digits can be

generated by pressing . To generate the next@`=

random number, press =.

Angular Unit Conversions

Each time are pressed, the angular unit changes@g

in sequence.

90°→ [rad] N 90 @g

1.570796327

→ [g] @g

100.

→ [°] @g

90.

sin–10.8 = [°] @S 0.8 =

53.13010235

→ [rad] @g

0.927295218

→ [g] @g

59.03344706

→ [°] @g

53.13010235

Memory Calculations

This calculator has two memory allocations: independent

memory (M), and last answer memory (ANS). You will find

them especially useful when combinations of calculations be-

come complicated, or when using the answer of previous

calculation to another operations.

Press NO to clear the independent memory (“M” sym-

bol will disappear).

Independent memory (M)

O:Stores the result in the memory.

R:Recalls the value stored in the memory.

@; :Adds the result to the value in the memory.

N*O 3 5

15.

30 + (3 × 5) = 30 +R=

45.

(3 × 5) × 4 = R* 4 =

60.

20+10–5= N 20 + 10 - 5 O

25.

121+13×2= 121 + 13 * 2 @;

147.

+) 21×3–16= 21 * 3 - 16 @;

47.

(Total) R

219.

Last answer memory (ANS)

When = is pressed, the calculation result will automati-

cally be stored in the last answer memory.

@? :Recalls the value stored in last answer

memory.

6+4 = ANS N 6 + 4 =

10.

ANS + 5 + 5 =

15.

8 × 2 = ANS 8 * 2 =

16.

ANS2@L=

256.

4 ÷ 5 = 0.8…(A) N 4 / 5 =

0.8

4 × (A) + 60 ÷ (A) =

4 *@?+ 60 /

@?=

78.2

Calculating the Greatest Common Factor (G.C.F.)

or Least Common Multiple (L.C.M.)

To calculate the G.C.F. or the L.C.M., the procedures are as

follows:

What is the G.C.F.

N 24

24_

of 24 and 36?

@œ 36

24GCF36_

12.

What is the L.C.M.

N 15

15_

of 15 and 9?

@ˆ 9

15LCM9_

45.

Calculating Quotient and Remainder

“: Calculates the quotient and remainder.

23 ÷ 5 N 23 @“ 5

‘

(R: Remainder) =

4. R3.

9.5 ÷ 4 9.5 @“ 4

9.5

‘

2. R1.5

–32 ÷ (–5) – 32 @“– 5

–32

‘

–5_

6. R–2.

• Pressing “cannot be followed by pressing a key for

another operation such as (+, –, , ÷), otherwise an error×

will result.

• The calculator can display a quotient or remainder up to 5

digits in length, including the “–” sign. If numbers longer

than 5 digits are entered, normal division is performed.

FRACTION CALCULATIONS

Entering Fractions

• To enter fractions, use the following keys:

Ø:Places the symbol “

” between the numerator

and the denominator.

∞:Separates the integer (whole number) part

from the fractional part of a mixed number.

4– = N 2 Ø 3 =

2/3

4– = 4 ∞ 1 Ø 2 =

¬¬

1/2

• Up to 10 key strokes, including “¬” and “

”, can be used

to enter a fraction.

Calculating with Fractions

Fractions can be incorporated into an arithmetic calculation.

“SIMP” symbol will appear with a calculation result if the

answer can be further simplified. Refer to the following sec-

tion of this manual for details.

– + – = N 1 Ø 2 + 1 Ø 3 =

5/6

– × – = 2 Ø 5 * 1 Ø 3 =

2/15

How to Simplify a Fraction

Reducing to its simplest form

If the result of pressing = is displayed with the “SIMP”

symbol, the calculation can be reduced further. Use the

ª key to set the factor of the fraction to simplify, either

automatically or manually.

[Automatic Simplification]

– + — = N 1 3 2 12 Ø + Ø =

SIMP

6/12

FACTOR?

SIMP

6/12

SIMP

6/12

1/2

* If you do not know a common factor, press =. The

greatest common factor “6” will be displayed.

[Manual Simplification]

– + — = N 1 3 2 12 Ø + Ø =

SIMP

6/12

FACTOR?

SIMP

6/12

2 =*

SIMP

23/6

ª = 3

1/2

* “2” is entered as a factor, and the “ ” will be displayedSIMP

to indicate further simplification of the fraction.

If the entered value is not a common factor, the cursor will

be set under the value. Press to clear the value,d

then enter a correct common factor. Press to returnN

to the “FACTOR?” display.

Now that you have learned how to reduce a fraction to

its simplest form, you can start using your calculator to

perform fraction calculations quickly and efficiently.

– + — = N 5 6 1 14 Ø + Ø =

SIMP

38/42

19/21

* If =is pressed instead of ª, the number will

automatically be reduced down to its simplest form with

the greatest common factor.

Reducing to the lowest denominator

Prior to pressing the key, a common denominator can=

be set to organize calculations.

– + – = N 1 3 1 Ø + Ø 4

1/3+1/4_

DENOM.?

SIMP

28/48

48 =*

16/48+12/48_

SIMP

28/48

* Enter a common denominator of the two fractions.

If the entered value is not a common denominator, the

cursor will be set under the value. Press to cleard

the value, then enter a correct common denominator.

Press N to return to the “DENOM.?” display.

Now that you have learned how to reduce a fraction to

its lowest denominator, you can start using your calcu-

lator to perform fraction calculations quickly and effi-

ciently.

– + – = N 1 3 1 Ø + Ø 4

1/3+1/4_

DENOM.?

SIMP

28/48

12_

SIMP

28/

4/12+3/12_

7/12

* If =is pressed instead of a number entry, the least

common denominator will automatically be displayed.

Conversion from/to a Fraction

º:Converts a decimal or improper fraction to a

mixed fraction.

æ:Converts a mixed fraction or decimal to an im-

proper fraction. In some cases, a decimal may

not be converted to a fraction.

ø:Converts an improper fraction or a mixed frac-

tion to a decimal.

4– = N 4 ∞ 5 Ø 6 =

¬¬¬¬¬

5/6

→ [A.xxx]ø

4.833333333

→ [A/B] æ

29/6

1 ÷ 3 = 1 / 3 =

0.333333333

→ [A/B] æ

1/3

6 ÷ 5 = 6 / 5 =

1.2

→ [A/B] æSIMP

12/10

→ [AB/C]ºSIMP

¬¬¬¬¬

2/10

→ [A.xxx]ø

1.2

1.25 + – = 1.25 + 2 Ø 5 =

1.65

→ [AB/C]ºSIMP

¬¬¬¬¬

65/100

ª==

¬¬¬¬¬

13/20

STATISTICAL CALCULATIONS

To enter the statistical mode, press . The indicator@”

symbol ’ will light up. The following statistics can be

obtained:

–

: Mean of samples

sx : Standard deviation of samples

x: Population standard deviation of samples

n : Number of samples

x: Sum of samples

x2: Sum of the squares of samples

Entering Data

To enter sample data, use the numeric keys and press

k O( key) after each value.

To enter data with its frequency, use the numeric keys to

enter the value, then press § R( key), enter the fre-

quency, then press k.

Enter the data “7”

N@” ’

@c 7

n = 1.

There are 13 students

@c 70 § 13

70, 13_

who scored 70 in the

n = 13.

test, and 5 students

50 § 5

50, 5_

who scored 50.

n = 18.

* The number of samples for the entered data will be dis-

played.

• Entered data are kept in memory until @c or

@” are pressed. Before entering new data, clear

the memory contents.

• If the number of the sample values exceeds 999,999,999

“n=” will not appear.

• When inputting a formula as a sample value with frequency,

parenthesize the data.

Example: (

)§

frequency

Score Number of

Persons

30 5

40 3

50 10

60 12

70 13

80 9

90 7

100 3

Correcting Entered Data

Correction prior to pressing k:

Delete incorrect data with N.

Correction after pressing k:

Press > to confirm the latest entry and press @J

to delete it.

Calculating Statistical Quantities

@c ’

30 § 5 k

n = 5.

40 § 3 k

n = 8.

50 § 10 k

n = 18.

60 § 12 k

n = 30.

70 § 13 k

n = 43.

80 § 9 k

n = 52.

90 § 7 k

n = 59.

100 § 3 k

n = 62.

@÷

65.32258065

@£

18.52935128

18.37931358

n = 62.

= 4050.

2 = 285500.

• If both the resulting digits and the function name (such as

x=) cannot be contained in the display, only the resulting

value will be displayed; the function name will not be dis-

played.

Statistical Calculation Formulas

In the statistical calculation formulas, an error will occur:

• the absolute value of the intermediate result or calculation

result is equal to or greater than 1 × 10

100.

• the denominator is zero.

• an attempt is made to take the square root of a negative

number.

ERROR AND CALCULATION RANGES

Errors

An error will occur if an operation exceeds the calculation

ranges, or if a mathematically illegal operation is attempted. If

an error occurs, pressing < (or >) automatically moves

the cursor back to the place in the equation where the error

occurred. Edit the equation or press to clear the equa- N

tion.

Error Codes and Error Types

Syntax error (Error 1):

• An attempt was made to perform an invalid operation.

Ex. 2 +- 5 =

Calculation error (Error 2):

• The absolute value of an intermediate or final calculation

result equals or exceeds 10

100.

• An attempt was made to divide by 0.

• The calculation ranges were exceeded while performing

calculations.

Σx x = 1 + x2 + ··· + xn

Σx2

= x12 + x22 + ··· + xn2

(n: number of samples)

x =

Σx

sx = Σx

– nx

n – 1

σx = Σx

– nx

Depth error (Error 3):

• The available number of buffers was exceeded. (There are

8 buffers* for numeric values and 16 buffers for calculation

instructions). * 4 buffers in STAT mode.

Equation too long (Error 4):

• The equation exceeded its maximum input buffer (159 char-

acters). An equation must be shorter than 159 characters.

Calculation Ranges

•Within the ranges specified below, this calculator is

accurate to ±1 of the least significant digit of the man-

tissa. However, a calculation error increases in con-

tinuous calculations due to accumulation of each cal-

culation error. (This is the same for yx, x¿¿¿¿¿ , etc. where

continuous calculations are performed internally.)

Additionally, a calculation error will accumulate and

become larger in the vicinity of inflection points and

singular points of functions.

• Calculation range: ±10–99 ~ ±9.999999999×1099 and 0.

If the absolute value of an entry or a final or intermediate

result of a calculation is less than 10–99 , the value is consid-

ered to be 0 in calculations and in the display.

* n, r: positive integers

Function Dynamic Range

sin xDEG : |x| < 1010

cos | x (tan x : |x≠ 90(2n–1))*

tan xRAD : | | < —– 10x×10

(tan | x : |x≠ – × (2n–1))*

GRAD : |x| < — 10×10

(tan x : |x| ≠ 100(2n–1))*

sin–1x| | x≤ 1

cos

–1x

tan

–1x x| | < 10100

In x10–99 ≤x < 10100

log x

. > 0: –10y100 < log < 100x y

yx. y = 0: 0 < x < 10100

. y < 0: x = n (0 < |x| < 1: – = 2n–1, x≠ 0)*,

–10100 < x ylog | | < 100

. y > 0: –10

100 < – log < 100 ( 0)y x ≠

x¿y. y = 0: 0 < x < 10100

. y < 0: x = 2n–1 (0 < |x| < 1: – = n, x≠ 0)*,

–10100 < – log |y| < 100

ex–10

100 < x ≤ 230.2585092

10x–10

100 < x < 100

x2|x| < 1050

¿x x0 ≤ < 10100

x–1 |x| < 10100 (x ≠ 0)

n! 0 ≤ n ≤ 69*

n rP0 ≤ r ≤ n ≤ 69*

n rC

DRG DEG→RAD, GRAD→DEG : |x| < 10100

RAD→GRAD : |x| < – × 1098

180

BATTERY REPLACEMENT

Notes on Battery Replacement

Improper handling of batteries can cause electrolyte leakage

or explosion. Be sure to observe the following handling rules:

• Replace both batteries at the same time.

• Do not mix new and old batteries.

• Make sure the new batteries are the correct type.

• When installing, orient each battery correctly as indicated in

the calculator.

• The factory-installed batteries may be exhausted before

they reach the service life stated in the specifications.

When to Replace the Batteries

If the display has poor contrast or nothing appears on the

display even when is pressed, it is time to replace theN

batteries.

Caution

• Fluid from a leaking battery accidentally entering an eye

could result in serious injury. Should this occur, wash with

clean water and immediately consult a doctor.

• Should fluid from a leaking battery come into contact with

your skin or clothes, immediately wash with clean water.

• If the product is not to be used for some time, to avoid

damage to the unit from leaking batteries, remove them and

store in a safe place.

• Do not leave exhausted batteries inside the product.

• Do not fit partially used batteries, and be sure not to mix

batteries of different types.

• Keep batteries out of the reach of children.

• Exhausted batteries left in the calculator may leak and

damage the calculator.

• Explosion risk may be caused by incorrect handling.

• Do not throw batteries into a fire as they may explode.

Replacement Procedure

1. Turn the power off by pressing @F.

2. Loosen both screws and remove the bat-

tery cover.

3. Replace the old batteries with new, with

the positive (+) sides facing up.

4. Replace the battery cover and screws.

5. Press the RESET switch on the back.

• Make sure that the display appears

as shown. Otherwise, remove the

batteries, reinstall, and check the dis-

play again.

Automatic Power Off Function

This calculator will turn its power off automatically if no key is

pressed for about 10 minutes.

SPECIFICATIONS

Calculations: General arithmetic operations (add,

subtract, multiply, divide, operations

with constants, memory operations,

fraction operations, function

operations, statistical operations,

etc.)

Internal calculations: Mantissas of up to 12 digits

Pending operations: 16 calculations 8 numeric values

(4 numeric values in STAT mode)

Power source: 3V ¶ (DC):

Alkaline batteries

(LR4 24 or equivalent) ×

Power consumption: 0.0006 W

Operating time: Approx. 2000 hours, when

continuously displaying 55555. at

25°C. (77°F)

May vary according to usage and

other factors.

Operating temperature: 0°C – 40°C (32°F – 104°F)

External dimensions: 78.6 mm (W) × 144 mm (D)

× 11.6 mm (H)

3-3/32” (W) × 5-21/32” (D)

× 15/32” (H)

Weight: Approx. 75 g (0.17 lb)

(Including batteries)

Accessories: Batteries × 2 (installed), operation

manual, quick reference card and

hard case.

FOR MORE INFORMATION

Visit us on the Internet at:

http://www.sharpusa.com

http://www.sharpplace.com

SHARP ELECTRONICS CORPORATION

Sharp Plaza, Mahwah, New Jersey 07430-1163

PRINTED IN CHINA / IMPRESO EN CHINA

05BGK (TINSE0529THZZ)

Produkt Specifikationer

Mærke:	Sharp
Kategori:	Regnemaskine
Model:	EL-500W
Type:	Videnskabelig
Vægt:	79 g
Formfaktor:	Lomme
Dimensioner (BxDxH):	78.6 x 144 x 11.6 mm
Strømkilde:	Batteri
Batteritype:	LR44
Cifre:	11 cifre