# Sharp EL-501W Owner Manual

EL 501W

EL 501W

EL 501W

EL-501W

SCIENTIFIC CALCULATOR

OPERATION MANUAL

MODEL

ENGLISH

INTRODUCTION

Thank you for purchasing the SHARP Scientific Calculator

Model EL-501W.

About the calculation examples (including some formulas

and tables), refer to the reverse side of this English manual.

Refer to the number on the right of each title on the

manual for use.

After reading this manual, store it in a convenient location for

future reference.

Model EL-501W.

About the calculation examples (including some formulas

and tables), refer to the reverse side of this English manual.

Refer to the number on the right of each title on the

manual for use.

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.

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.

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.

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

• 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.

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.

o Press the RESET switch (on the back), with the tip of a

ball-point pen or similar object, only in the following cases.

Do not use an object with a breakable or sharp tip. Note

that pressing the RESET switch erases all data stored in

memory.

• When using for the first time

• After replacing the batteries

• To clear all memory contents

• When an abnormal condition occurs and all keys are

Do not use an object with a breakable or sharp tip. Note

that pressing the RESET switch erases all data stored in

memory.

• When using for the first time

• After replacing the batteries

• To clear all memory contents

• When an abnormal condition occurs and all keys are

inoperative.

If service should be required on this calculator, use only a

SHARP servicing dealer, SHARP approved service facility,

or SHARP repair service where available.

SHARP servicing dealer, SHARP approved service facility,

or SHARP repair service where available.

Hard Case

(During actual use not all symbols are displayed at the same time.)

If the value of mantissa does not fit within the range

±0.000000001 – ±9999999999, the display changes to scien-

tific notation. The display mode can be changed according to

the purpose of the calculation.

If the value of mantissa does not fit within the range

±0.000000001 – ±9999999999, the display changes to scien-

tific notation. The display mode can be changed according to

the purpose of the calculation.

2ndF

: Appears when @ is pressed, indicating that the

functions shown in orange are enabled.

HYP

: Indicates that h has been pressed and the hy-

perbolic functions are enabled. If @ H are

pressed, the symbols “2ndF HYP” appear, indicat-

ing that inverse hyperbolic functions are enabled.

pressed, the symbols “2ndF HYP” appear, indicat-

ing that inverse hyperbolic functions are enabled.

DEG/RAD/GRAD: Indicates angular units and changes each

time G is pressed. The default setting is DEG.

( )

: Appears when a calculation with parentheses is per-

formed by pressing (.

BIN

: Indicates that @ ê has been pressed.

Binary system mode is selected.

OCT

: Indicates that @ î has been pressed.

Octal system mode is selected.

HEX

: Indicates that @ ì has been pressed.

Hexadecimal system mode is selected.

CPLX

: Indicates that @ π has been pressed.

Complex number mode is selected.

STAT

: Indicates that @ Æ has been pressed.

Statistics mode is selected.

M

: Indicates that a numerical value is stored in the

independent memory.

E

: Appears when an error is detected.

PRINTED IN CHINA / IMPRIMÉ EN CHINE / IMPRESO EN CHINA

04AGK (TINSE0496THZZ)

BEFORE USING THE CALCULATOR

Key Notation Used in this Manual

In this manual, key operations are described as follows:

To specify A (HEX) : A

To specify

To specify

π

: @ V

To specify Exp

: E

Functions that are printed in orange above the key require

@ to be pressed first before the key. Numbers are not

shown as keys, but as ordinary numbers.

@ to be pressed first before the key. Numbers are not

shown as keys, but as ordinary numbers.

Power On and Off

Press ª to turn the calculator on, and F to turn it off.

Clearing Numbers

• Press ª to clear the entries except for a numerical

value in the independent memory and statistical data.

• Press æ to clear the number entered prior to use of

function key.

• In case of one digit correction of the entered number, press

ø (right shift key).

INITIAL SET UP

Mode Selection

Normal mode: ª

Used to perform arithmetic operations and function calcula-

tions. BIN, OCT, HEX, CPLX and STAT are not displayed.

Used to perform arithmetic operations and function calcula-

tions. BIN, OCT, HEX, CPLX and STAT are not displayed.

Binary, Octal, Decimal, or Hexadecimal system mode:

@ê, @î, @í or @ì

@ê, @î, @í or @ì

Complex number mode: @π

Used to perform arithmetic operations with complex numbers.

To clear this mode, press @π.

Used to perform arithmetic operations with complex numbers.

To clear this mode, press @π.

Statistics mode: @Æ

Used to perform statistical calculations. To clear this mode,

press @Æ.

When executing mode selection, statistical data will be cleared

even when reselecting the same mode.

Used to perform statistical calculations. To clear this mode,

press @Æ.

When executing mode selection, statistical data will be cleared

even when reselecting the same mode.

• By pressing F or Automatic power off function, the

mode is cleared and returned to the normal mode.

Priority Levels in Calculation

This calculator performs operations according to the following

priority:

1 Functions such as sin, x

priority:

1 Functions such as sin, x

2

, and %

2 y

x

,

x

¿y

3

×, ÷

4 +, –

5 =, M+ and other calculation ending instruction

• Calculations which are given the same priority level are

5 =, M+ and other calculation ending instruction

• Calculations which are given the same priority level are

executed in sequence.

• If parentheses are used, parenthesized calculations have

precedence over any other calculations.

• Parentheses can be continuously used up to 15 times un-

less pending calculations exceed 4.

DEG (

°)

GRAD (g)

RAD

100000÷3=

[Floating point]

[Floating point]

ª100000/3=

33333.33333

[TAB set to 2]

@i 2

33333.33

→[Scientific notation]

∞

3.33

04

→[Floating point]

∞@i.

33333.33333

• If the value for floating point system does not fit in the

following range, the calculator will display the result using

scientific notation system:

0.000000001

scientific notation system:

0.000000001

≤ | x | ≤ 9999999999

Determination of the Angular Unit

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

radians, and grads) can be specified.

radians, and grads) can be specified.

Press G

(rad)

Selecting the Display Notation and Decimal Places

• When calculation result is displayed in the floating point

system, pressing ∞ displays the result in the scientific

notation system.

Pressing ∞ once more displays the result again in the

floating point system.

notation system.

Pressing ∞ once more displays the result again in the

floating point system.

• Pressing @i and any value between 0 and 9 speci-

fies the number of decimal places in the calculation result.

To clear the setting of decimal places, press @ i

..

To clear the setting of decimal places, press @ i

..

SCIENTIFIC CALCULATIONS

• Calculate in the normal mode.

• In each example, press ª to clear the display.

• In each example, press ª to clear the display.

Arithmetic Operations

• The closing parenthesis ) just before = or ;

may be omitted.

• When entering only a decimal place, it is not necessary to

press 0 before ..

Random Numbers

A pseudo-random number with three significant digits can be

generated by pressing @ `. Random number gen-

eration is not possible when binary/octal/hexadecimal sys-

tem mode is set.

generated by pressing @ `. Random number gen-

eration is not possible when binary/octal/hexadecimal sys-

tem mode is set.

Angular Unit Conversions

Each time @ g are pressed, the angular unit changes

in sequence.

in sequence.

Memory Calculations

This calculator has one independent memory (M). It is avail-

able in the normal mode and binary, octal, hexadecimal

system mode.

• The independent memory is indicated by the three keys:

able in the normal mode and binary, octal, hexadecimal

system mode.

• The independent memory is indicated by the three keys:

O, R, ;.

Before starting a calculation, clear the memory by press-

ing ª and O.

Before starting a calculation, clear the memory by press-

ing ª and O.

• A value can be added to or subtracted from an existing

memory value. When subtracting a number from the

memory, press ± and ;.

memory, press ± and ;.

• The contents of the memory are retained even when the

calculator is turned off. A value stored in memory will thus

remain until it is changed or until the batteries run out.

remain until it is changed or until the batteries run out.

Chain Calculations

This calculator allows the previous calculation result to be

used in the following calculation.

The previous calculation result will not be recalled after en-

tering multiple instructions.

used in the following calculation.

The previous calculation result will not be recalled after en-

tering multiple instructions.

Time, Decimal and Sexagesimal Calculations

This calculator performs decimal-to-sexagesimal conversion

and sexagesimal-to-decimal conversion. In addition, the four

basic arithmetic operations and memory calculations can be

carried out using the sexagesimal system.

Notation for sexagesimal is as follows:

and sexagesimal-to-decimal conversion. In addition, the four

basic arithmetic operations and memory calculations can be

carried out using the sexagesimal system.

Notation for sexagesimal is as follows:

123.404080

degree

second

minute

Note: When the calculation or conversion result is con-

verted, a residual may occur.

Constant Calculations

• In the constant calculations, the addend becomes a con-

stant. Subtraction and division are performed in the same

manner. For multiplication, the multiplicand becomes a

constant.

manner. For multiplication, the multiplicand becomes a

constant.

Functions

• Refer to the calculation examples of each function.

• For most calculations using functions, enter numerical

• For most calculations using functions, enter numerical

values before pressing the function key.

STATISTICAL CALCULATIONS

Press @ Æ to select statistics mode.

The following statistics can be obtained:

The following statistics can be obtained:

x

Mean of samples (x data)

sx

Sample standard deviation (x data)

σx

Population standard deviation (x data)

n

Number of samples

Σx

Sum of samples (x data)

Σx

2

Sum of squares of samples (x data)

Data Entry and Correction

Entered data are kept in memory until @ Æ or F

are pressed. Before entering new data, clear the memory

contents.

are pressed. Before entering new data, clear the memory

contents.

[Data Entry]

Data k

Data * frequency k (To enter multiples of the same

data)

Data * frequency k (To enter multiples of the same

data)

[Data Correction]

Correction prior to pressing k:

Correction prior to pressing k:

Delete incorrect data with ª.

Correction after pressing k:

Reenter the data to be corrected and press @ J.

• The number displayed after pressing k or @ J

during data entry or correction is the number of samples

(n).

(n).

Statistical Calculation Formulas

In the statistical calculation formulas, an error will occur when:

• the absolute value of the intermediate result or calculation

• 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

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

number.

BINARY, OCTAL, DECIMAL, AND

HEXADECIMAL OPERATIONS (N-BASE)

HEXADECIMAL OPERATIONS (N-BASE)

This calculator can perform the four basic arithmetic opera-

tions, calculations with parentheses and memory calcula-

tions using binary, octal, decimal, and hexadecimal num-

bers.

When performing calculations in each system, first set the

calculator in the desired mode before entering numbers.

It can also perform conversions between numbers expressed

in binary, octal, decimal and hexadecimal systems.

Conversion to each system is performed by the following

keys:

tions, calculations with parentheses and memory calcula-

tions using binary, octal, decimal, and hexadecimal num-

bers.

When performing calculations in each system, first set the

calculator in the desired mode before entering numbers.

It can also perform conversions between numbers expressed

in binary, octal, decimal and hexadecimal systems.

Conversion to each system is performed by the following

keys:

Ï ê : Converts to the binary system. “BIN” appears.

Ï î : Converts to the octal system. “OCT” appears.

Ï ì : Converts to the hexadecimal system. “HEX”

appears.

Ï í : Converts to the decimal system. “BIN”, “OCT”,

and “HEX” disappear from the display.

Conversion is performed on the displayed value when these

keys are pressed.

keys are pressed.

Note: In this calculator, the hexadecimal numbers A – F are

entered by pressing E, Ñ, ⁄, ´, I,

and l, and displayed as follows:

A

→ å, B → ∫, C → ç, D → ∂, E → é, F → ƒ

In the binary, octal, and hexadecimal systems, fractional

parts cannot be entered. When a decimal number having a

fractional part is converted into a binary, octal, or hexadeci-

mal number, the fractional part will be truncated. Likewise,

when the result of a binary, octal, or hexadecimal calculation

includes a fractional part, the fractional part will be trun-

cated. In the binary, octal, and hexadecimal systems, nega-

tive numbers are displayed as a complement.

parts cannot be entered. When a decimal number having a

fractional part is converted into a binary, octal, or hexadeci-

mal number, the fractional part will be truncated. Likewise,

when the result of a binary, octal, or hexadecimal calculation

includes a fractional part, the fractional part will be trun-

cated. In the binary, octal, and hexadecimal systems, nega-

tive numbers are displayed as a complement.

F

A

B

C

D

E

COMPLEX NUMBER CALCULATIONS

To carry out addition, subtraction, multiplication, and division

using complex numbers, press @π to select the com-

plex number mode.

• A complex number is represented in the a + bi format. The

using complex numbers, press @π to select the com-

plex number mode.

• A complex number is represented in the a + bi format. The

“a” is the real part while the “bi” is the imaginary part.

When inputting the real part, after inputting the number

press a. When inputting the imaginary part, after in-

putting the number press b. To obtain the result press

=.

When inputting the real part, after inputting the number

press a. When inputting the imaginary part, after in-

putting the number press b. To obtain the result press

=.

• Immediately after completing calculation, you can recall

the value of the real part with a, and the value of the

imaginary part with b.

imaginary part with b.

• If the complex numbers are represented as polar coordi-

nates, press @} after they are input with a

and b.

and b.

ERROR AND CALCULATION RANGES

Errors

An error will occur if an operation exceeds the calculation

ranges, or if a mathematically illegal operation is attempted.

In the case of an error, the display will show “E”.

An error can be cleared by pressing ª.

ranges, or if a mathematically illegal operation is attempted.

In the case of an error, the display will show “E”.

An error can be cleared by pressing ª.

Calculation Ranges

• Within the ranges specified, this calculator is accurate to

±1 of the least significant digit of the mantissa. However, a

calculation error increases in continuous calculations due

to accumulation of each calculation error. (This is the

same for y

calculation error increases in continuous calculations due

to accumulation of each calculation error. (This is the

same for y

x

,

x

¿ , e

x

,

ln, 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.

Additionally, a calculation error will accumulate and

become larger in the vicinity of inflection points and

singular points of functions.

• Calculation ranges

±10

-99

~ ±9.999999999

×10

99

and 0.

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

result of a calculation is less than 10

result of a calculation is less than 10

–99

, the value is consid-

ered to be 0 in calculations and in the display.

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 properly as indicated in

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 properly as indicated in

the calculator.

• Batteries are factory-installed before shipment, and may be

exhausted before they reach the service life stated in the

specifications.

specifications.

When to Replace the Batteries

If the display has poor contrast, the batteries require replace-

ment.

ment.

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.

water and immediately consult a doctor.

• Should fluid from a leaking battery come in 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.

safe place.

• Do not leave exhausted batteries inside the product.

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

• 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

• 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.

• 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 battery cover. (Fig. 1)

2. Loosen both screws and remove the battery cover. (Fig. 1)

Fig. 1

Fig. 2

3. Remove the used batteries then replace with two fresh

batteries with the positive sides (+) facing up. (Fig. 2)

4. Replace the battery cover and screws.

5. Press ª.

• Make sure that the display appears as shown below. If the

5. Press ª.

• Make sure that the display appears as shown below. If the

display does not appear as shown, reinstall the batteries

and check the display once again.

and check the display once again.

Automatic Power Off Function

This calculator will turn itself off to save battery power if no

key is pressed for approximately 8 minutes.

key is pressed for approximately 8 minutes.

SPECIFICATIONS

Calculations:

Scientific calculations, binary/octal/

hexadecimal number calculations,

complex number calculations, sta-

tistical calculations, etc.

hexadecimal number calculations,

complex number calculations, sta-

tistical calculations, etc.

Internal calculations:

Mantissas of up to 10 digits

Pending operations:

4 calculations

Power source:

3V ¶ (DC):

Alkaline batteries (LR44)

Alkaline batteries (LR44)

× 2

Power consumption:

0.0005 W

Operating time:

Approx. 3000 hours

when continuously displaying 55555.

at 25°C (77°F).

Varies according to use and other

factors.

when continuously displaying 55555.

at 25°C (77°F).

Varies according to use 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)

3-3/32” (W)

× 5-21/32” (D) × 15/32”

(H)

Weight:

Approx. 75 g (0.17 lb)

(Including batteries)

(Including batteries)

Accessories:

Batteries

× 2 (installed), operation

manual, quick reference card and

hard case

hard case

FOR MORE INFORMATION ABOUT

SCIENTIFIC CALCULATOR

SCIENTIFIC CALCULATOR

Visit our Web site.

http://sharp-world.com/calculator/

http://sharp-world.com/calculator/

SHARP CORPORATION

Coordinate Conversions

• Before performing a calculation, select the angular unit.

↔

Rectangular coord.

Polar coord.

P (x,y )

X

Y

0

y

x

P (r,

θ )

X

Y

0

r

θ

DISPLAY

←Symbol

Mantissa

Exponent

• Floating point system

• Scientific notation system

1 2 3 4 5 6 7 8 9 0 . ,

1 2 3 4 5 6 7 8 9 0 . ,

1 2 3 4 5 6 7 8 9 0 . ,

1 2 3 4 5 6 7 8 9 0 . ,

1 2 3 4 5 6 7 8 9 0 . ,

1 2 3 4 5 6 7 8 9 0 . ,