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EL-503W_ENGLISH  370x540mm

EL-503W

FRACTION/SCIENTIFIC CALCULATOR

OPERATION MANUAL

MODEL

INTRODUCTION

Thank you for purchasing the SHARP Fraction/Scientific
Calculator Model EL-503W. This calculator will help you
understand mathematical concepts behind fraction
calculation, 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 battery in a fire.
• Keep battery 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 incidental
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), 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 battery
• 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.

Hard Case

DISPLAY

• During actual use, not all symbols are displayed at the

same time.

• Only the symbols required for the usage under instruction

are shown in the display and calculation examples of this
manual.

/

:

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.

x

/

y

:

Appears when 

x

 or 

y

 solutions are displayed in the

equation mode.

Symbol

Mantissa

Exponent

SIMP

:

Indicates that a fraction can be simplified further, or
entering a common denominator.

DEG/RAD/GRAD:

 Indicates angular units (Degrees, Radians

and Grads) and changes each time 

G

 is pressed.

:

Appears when equation mode is selected.

:

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 E

x

p :

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 

N

 to turn the calculator on, and 

@F

 to turn it

off.

Clearing Methods

Operation

Entry

  M*

1

STAT,

EQN

(Display)

ANS*

2

(Coefficients)

N

×

×

×

@c

×

Mode selection

×

RESET switch

 : Clear

×

 : Retain

*

1

Independent memory M.

*

2

Statistical 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/function, move the cursor to the number/

function you wish to delete, then press 

d

. If the cursor is

located  at the right end of an equation, the 

d

  key will

function as a back space key.

• To insert a number, move the cursor to the place immediately

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

15 + 8

N

 15 

+

 8

15+8_

dd

15_

15 – 3

-

 3

15–3_

15 

×

 3 =

N

 15 

*

 3 

=

45.

<

15

×

3_

15 

×

 6 =

d

 6 

=

90.

13 

×

 24 =

N

 13 

*

 24 

=

312.

>

13

×

24

15 

×

 24 =

>d

 5 

=

360.

Priority Levels in Calculation

This calculator performs operations according to the following
priority:

1

Functions expressed with numerical data placed before
(such as 

x

–1

x

2

, n!)

2

y

x

x

¿

y

3

Functions expressed with numerical data placed after (such
as sin, cos, (–), 

e

x

, 10

x

¿

)

4

Multiplications with the sign “

×

” omitted from the front of a

function (such as 3cos20)

5

n

C

r

n

P

r

, GCF, LCM

6

×

, ÷, INT÷, mod

7

+, –

8

Operations end commands (such as =, M+, %,  DEG,

RAD,  GRAD, 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. In this mode, 

  and 

  do not appear on the

display.

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 

@”

  with 

  on the display.

 disappears as the calculator returns to normal mode.

Equation Mode:

Used to solve equations. To enter equation mode, press

  and then 

0

  or 

1

  appears on the

display to indicate that the equation mode is selected. To
return to normal mode, press 

  with 

  on the

display. The calculator returns to normal mode and 

 dis-

appears from the display.

• The mode will remain selected when the calculator is turned

off.

• When executing mode selection, last answer memory will

be cleared.

Scientific (Exponential) Notation

People who need to deal with very large and very small numbers
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 number
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

20

×

 (1.5 

×

 10

5

)

1.2 

E

 20 

*

 1.5 

E

 5 

=

1.8

×

10

25

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 

@i

 9.

• 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 

N

  to 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 

=

–1’014.

(5+21)

×

(30–16)=

(

 5 

+

 21 

)*

(

 30 

-

 16 

=

*

1

364.

(6

×

10

3

)÷(2

×

10

–4

)= 6 

E

 3 

/

E–

 4 

=

30’000’000.

*

1

The closing parenthesis 

)

  just before 

=

  or 

;

may be omitted.

DEG

 (

°

)

GRAD

 (g)

RAD

(rad)

Press 

G

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.

• In constant calculations, constants will be displayed as K.

245

+60=

N

 245 

+

 60 

=

305.

12

+60=

N

 2

12 

+

 60 

=

72.

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–

π

4

[rad]=

Gu(@V/

 4

)=

0.707106781

tan

–1

1=[g]

G@T

 1 

=

50.

G

ln 20 =

@I

 20 

=

2.995732274

log 50 =

@l

 50 

=

1.698970004

e

3

 =

@e

 3 

=

20.08553692

10

1.7

 =

 1.7 

=

50.11872336

3

2

 + 5

2

 =

@L

 

+

 5 

@L=

34.

¿

32 + 

3

¿

21 =

 32 

+

 3 

@$

21 

=

8.415778426

7

4

 =

@™

 4 

=

2’401.

4! =

@!=

24.

10

P

3

 =

10 

@q

 3 

=

720.

5

C

2

 =

@Q

 2 

=

10.

π

3

 =

@V/

 3 

=

1.047197551

1
4

 + –

1
5

 =

@•

 

+

 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 

@g

 are pressed, the angular unit changes

in sequence.

90°

 [rad]

N

 90 

@g

1.570796327

 [g]

@g

100.

 [°]

@g

90.

sin

–1

0.8 = [°]

@S

 0.8 

=

53.13010235

 [rad]

@g

0.927295218

 [g]

@g

59.03344706

 [°]

@g

53.13010235

Memory Calculations

Mode

M

  ANS

Normal

Statistical (STAT)

×

Equation (EQN)

*

1

*

1

×

 : Available

×

 : Unavailable

*

1

only available for memory recall

π

2

π

2

θ

 = sin

–1

 

x

,

 

θ

 = tan

–1

 

x

θ

 = cos

–1

 

x

DEG

–90 

 

θ

 

 90

 

θ

 

 180

RAD

– — 

 

θ

 

 —

 

θ

 

 

π

GRAD

–100 

 

θ

 

 100

 

θ

 

 200

This calculator has two memory allocations: independent
memory (M), and last answer memory (ANS). You will find
them especially useful when combinations of calculations
become complicated, or when using the answer of previous
calculation to another operations.

Press 

NO

  to clear the independent memory (“M”

symbol will disappear).

[Independent memory (M)]

O

: Stores the result in the memory.

R

: Recalls the value stored in the memory using

up to 14 digits in accuracy.

@;

: Adds the result to the value in the memory.

N

 3 

*

 5 

O

15.

M

30 + (3 

×

 5) =

30 

+R=

45.

M

(3 

×

 5) 

×

 4 =

R*

 4 

=

60.

M

20+10–5=

N

 20 

+

 10 

-

 5 

O

25.

M

121+13

×

2=

121 

+

 13 

*

 2 

@;

147.

M

+) 21

×

3–16=

21 

*

 3 

-

 16 

@;

47.

M

–—————

(Total)

R

219.

M

NO

0.

M

[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.

4 ÷ 5 = 0.8…(A)

N

 4 

/

 5 

=

0.8

×

 (A) + 60 ÷ (A) = 4 

*@?+

 60 

/

@?=

78.2

Chain Calculations

• The previous calculation result can be used in the

subsequent calculation. However, it cannot be recalled
after entering multiple instructions.

6+4 = ANS

N

 6 

+

 4 

=

10.

ANS + 5 =

+

 5 

=

15.

×

 2 = ANS

*

 2 

=

16.

ANS

2

 =

@L=

256.

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 

œ

 36

24GCF36_

of 24 and 36?

=

12.

What is the L.C.M.

N

 15 

ˆ

 9

15LCM9_

of 15 and 9?

=

45.

Calculating Quotient and Remainder

: Calculates the quotient and remainder.

23 ÷ 5 =

N

 23 

 5

23

5_

(R: Remainder)

=

4.

R3.

9.5 ÷ 4 =

9.5 

 4

9.5

4_

=

2.

R1.5

–32 ÷ (–5) =

 32 

“–

 5

–32

–5_

=

6.

R–2.

 operation cannot be followed by 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 a quotient or
remainder exceeds 5 digits, normal division is performed.

Calculating Remainder (Modulo Operation)

Ã

: Find the remainder when a numerical value is

divided by a divisor.

What is the remainder

N

 5 

Ã

 3

5mod3_

of “5 ÷ 3”?

=

2.

What is the remainder

N

 100 

Ã

 8

100mod8_

of “100 ÷ 8”?

=

4.

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

2
3

 =

N

 2 

Ø

 3 

=

2/3

4–

1
2

 =

          4 

 1 

Ø

 2 

=

4

¬

¬

¬

¬

¬

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.

The “

SIMP

” symbol will appear with a calculation result if the

answer can be further simplified. Refer to the following
section of this manual for details.

1
2

 + –

1
3

 =

N

 1 

Ø

 2 

+

 1 

Ø

 3 

=

5/6

2
5

 

×

 –

1
3

 =

          2 

Ø

 5 

*

 1 

Ø

 3 

=

2/15

(

7
5

)

5

 =

Ø

 5 

@™

 5 

=

16807/3125

2

6

2

4

5

— =

 64 

Ø

 225 

=

8/15

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

1
3

 + —

2

12

 =

N

 1 

Ø

 3 

+

 2 

Ø

 12 

=

SIMP

6/12

                                                      

ª

SIMP

FACTOR?

                                                      

=

*

SIMP

6_

                                                      

=

1/2

* If you do not know a common factor, press 

=

. The

greatest common factor “6” will be displayed.

Manual Simplification

1
3

 + —

2

12

 =

N

 1 

Ø

 3 

+

 2 

Ø

 12 

=

SIMP

6/12

                                                      

ª

SIMP

FACTOR?

                                                   2 

=

*

SIMP

3/6

                                         

ª

 3 

=

1/2

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

SIMP

” will be displayed

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 

d

  to clear the value,

then enter a correct common factor. Press 

N

 to return

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.

5
6

 + —

1

14

 =

N

 5 

Ø

 6 

+

 1 

Ø

 14 

=

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 a common denominator]

Prior to pressing the 

=

 key, a common denominator can

be set to organize calculations.

1
3

 + –

1
4

 =

N

 1 

Ø

 3 

+

 1 

Ø

 4

1/3+1/4_

                                          

ª

SIMP

DENOM.?

                                     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 

d

  to clear

the value, then enter a correct common denominator.
Press 

N

 to return to the “DENOM.?” display.

1
3

 + –

1
4

 =

N

 1 

Ø

 3 

+

 1 

Ø

 4

1/3+1/4_

                                          

ª

SIMP

DENOM.?

                                          

=

*

SIMP

12_

                                          

=

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. In some cases, a decimal may
not be converted to a fraction.

æ

: Converts a mixed fraction or decimal to an

improper fraction. In some cases, a decimal may
not be converted to a fraction.

ø

: Converts an improper fraction or a mixed fraction

to a decimal.

4–

5
6

 =

N

 4 

 5 

Ø

 6 

=

4

¬

¬

¬

¬

¬

5/6

 [A.

xxx

]

ø

4.833333333

 [A/B]

æ

29/6

1 ÷ 3 =

/

 3 

=

0.333333333

 [A/B]

æ

1/3

6 ÷ 5 =

/

 5 

=

1.2

 [A/B]

æ

SIMP

12/10

 [A

B

/

C

]

º

SIMP

1

¬

¬

¬

¬

¬

2/10

 [A.

xxx

]

ø

1.2

1.25 + –

2
5

 =

1.25 

+

 2 

Ø

 5 

=

1.65

 [A

B

/

C

]

º

SIMP

1

¬

¬

¬

¬

¬

65/100

ª==

1

¬

¬

¬

¬

¬

13/20

STATISTICAL CALCULATIONS

To enter the statistical mode, press 

@”

. The following

statistics can be obtained:

x

:  Mean of samples (

x

)

sx

:  Standard deviation of samples (

x

)

σ

x

:  Population standard deviation of samples (

x

)

n

:  Number of samples

Σ

x

:  Sum of samples (

x

)

Σ

x

2

:  Sum of the squares of samples (

x

)

Entering Data

Entered data are kept in memory until 

@c

  or 

@

 are pressed.  Before entering new data, clear the memory

contents.
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”

@”
@c

 7

7_

k

n =

1.

*

There are 13 students

@c

 70 

§

 13

70, 13_

who scored 70 in the

k

n =

13.

test, and 5 students

50 

§

 5

50, 5_

who scored 50.

k

n =

18.

* The number of samples for the entered data will be

displayed.

• If the digits of the sample values exceed 9, “n=” will not

appear.

• Inputting a formula as a sample value with frequency is

possible.

Example: 

*

 

§

 

frequency 

k

Correcting Entered Data

Correction prior to pressing 

k

:

Delete incorrect data with 

N

.

Correction immediately after pressing 

k

:

Press 

>

 to confirm the latest entry and press 

@J

(

O

 key) to delete it.

If you want to delete any other data, enter the values again
and press 

@J

 to delete them.

Calculating Statistical Quantities

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

Σ

x

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

value will be displayed; the function name will not be
displayed.

Statistical Calculation Formulas

In the statistical calculation formulas, an error will occur if:
• 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.

EQUATION SOLVERS

Simultaneous linear equations with two unknowns or quadratic
equations may be solved using this function.

1

@À0

: Simultaneous linear equation with two

unknowns (VLE)

a

1

x

 + 

b

1

y

 = 

c

1

Coefficients: 

a

1

b

1

c

1

a

2

,  

b

2

c

2

a

2

x

 + 

b

2

y

 = 

c

2

Solutions: 

x

y

2

@À1

: Quadratic equation (QUAD)

ax

2

 + 

bx

 + 

c

 = 0 Coefficients: 

a

b

c

Solutions: 

x

• Press 

®

  after entering each coefficient (

a

1

a

, etc.).

Coefficients can be entered using ordinary arithmetic
operations and functions.

• The solution (result) will be displayed after entering all

coefficients.

• In the input/display screen of coefficients and the display

screen of the solution (result), press 

N

 to return to the

previous coefficient.

• To clear all the entered coefficients, press 

@c

.

• The results obtained using this function may include a margin

of error.

• The solution of a quadratic equation is only a real number.

@À0

{

 2

x

 + 3

y

 = 4

®

 3 

®

 4 

®

  5

x

 + 6

y

 = 7

®

 6 

®

 7

  

x

 = ?

®

x

–1.

  

y

 = ?

®

y

2.

           ⇓

®

{

 2

x

 + 3

y

 = 4

®®®®®®

  6

x

 + 7

y

 = 10

®

 7 

®

 10

  

x

 = ?

®

x

0.5

  

y

 = ?

®

y

1.

@À1

3

x

2

 + 4

x

 – 95 = 0

®

 4 

®–

 95

first 

x

 value?

®

x

5.

second 

x

 value?

®

x

–6.333333333

           ⇓

®

6

x

2

 + 4

x

 – 95 = 0

®®®®

first 

x

 value?

®

x

3.659716184

second 

x

 value?

®

x

–4.32638285

@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

@p

18.37931358

@n

n =

62.

@z

Σ

x

 =

4’050.

@w

Σ

x

2

 = 285’500.

Score Number of

Persons

30

5

40

3

50

10

60

12

70

13

80

9

90

7

100

3

Σ

x

 = 

x

1

 + 

x

2

 + ··· + 

x

n

Σ

x

2

 = 

x

1

2

 + 

x

2

2

 + ··· + 

x

n

2

          (n: number of samples)

x = 

Σ

x

n

sx

 = 

Σ

x

2

 – nx

2

n – 

1

σ

x

 = 

Σ

x

2

 – nx

2

n

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

 

N

 to clear the equation.

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 (or an intermediate

calculation resulting in 0).

• The calculation ranges were exceeded while performing

calculations.

• The solution of a quadratic equation is a complex number.

Depth error (Error 3):
• The available number of buffers was exceeded. (There are

10 buffers* for numeric values and 24 buffers for calculation
instructions).

* 5 buffers in STAT and EQN mode.

Equation too long (Error 4):
• The equation exceeded the 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
mantissa. However, a calculation error increases in
continuous calculations due to accumulation of each
calculation error. (This is the same for 

y

x

x

¿

¿

¿

¿

¿

ˇˇ

e

x

n!, ln,

mod, etc. where continuous calculations are performed
internally.)

Furthermore, 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

×

10

99

 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 considered

to be 0 in calculations and in the display.

BATTERY REPLACEMENT

Notes on Battery Replacement

Improper handling of battery can cause electrolyte leakage
or explosion. Be sure to observe the following handling rules:
• Make sure the new battery is the correct type.
• When installing, orient the battery correctly as indicated in

the calculator.

• The factory-installed battery may be exhausted before

they reach the service life stated in the specifications.

When to Replace the Battery

If the display has poor contrast or nothing appears on the
display even when 

N

 is pressed, it is time to replace the

battery.

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 battery, remove it and
store in a safe place.

• Keep battery out of the reach of children.
• Exhausted battery left in the calculator may leak and

damage the calculator.

• Explosion risk may be caused by incorrect handling.
• Do not throw battery 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.

3. Replace the old battery 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
battery, reinstall, and check the
display 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,
statistical calculations, equation
solvers, etc.

Calculation method:

D.A.L. (Direct Algebraic Logic)

Internal calculations:

Mantissas of up to 14 digits

Pending operations:

24 calculations 10 numeric values
(5 numeric values in STAT and EQN
mode)

Power source:

1.5V 

 (DC):

Alkaline battery
(LR44 or equivalent) 

×

 1

Power consumption:

0.0001 W

Operating time:

Approx. 5,000 hours, when
continuously displaying 55’555. 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. 73 g (0.17 lb)
(Including battery)

Accessories:

Battery 

×

 1 (installed), operation

manual, quick reference card and
hard case.

FOR MORE INFORMATION

Visit us on the Internet at:
http://sharp-world.com/calculator/

Function

Dynamic Range

sin 

x

DEG : |

x

| < 10

10

cos 

x

   (tan 

x

 : |

x

 90(2n–1))*

tan 

x

RAD : |

x

| < —– 

×

 10

10

   (tan 

x

 : |

x

 – 

×

 (2n–1))*

GRAD : |

x

| < — 

×

 10

10

   (tan 

x

 : |

x

 100(2n–1))*

sin

–1

x

, cos

–1

x

|

x

 1

tan

–1

x

|

x

| < 10

100

In 

x

, log 

x

10

–99

 

 

x

 < 10

100

y

 > 0: –10

100

 < 

x

log

y

 < 100

yx

y

 = 0: 0 < 

x

 < 10

100

y

 < 0: 

x

 = n (0 < |

x

| < 1: – = 2n–1, 

x

 

 0)*,

–10

100

 < 

x

log |

y

| < 100

y

 > 0: –10

100

 < – log

y

 < 100 (

x

 

 0)

x

¿

y

y

 = 0: 0 < 

x

 < 10

100

y

 < 0: 

x

 = 2n–1 (0 < |

x

| < 1: – = n, 

x

 

 0)*,

–10

100

 < – log |

y

| < 100

e

x

–10

100

 < 

x

 

 230.2585092

10

x

–10

100

 < 

x

 < 100

x

2

|

x

| < 10

50

¿

x

 

x

 < 10

100

x

–1

|

x

| < 10

100

 (

x

 

 0)

n!

 n 

 69*

n

P

r

 r 

 n 

 9999999999*

— < 10

100

n

C

r

 r 

 n 

 9999999999*

— < 10

100

 r 

 69

n

GCF

n

n

LCM

n

 n 

<

 10

10

DRG

DEG

RAD, GRAD

DEG : |

x

| < 10

100

RAD

GRAD : |

x

| < – 

×

 10

98

1

x

1

x

1

x

1

x

π

180

π

2

10

9

* n, r: positive integers

π

2

n!

(n–r)!

n!

(n–r)!

ENGLISH

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