ENGLISH
INTRODUCTION
Thank you for purchasing the SHARP Scientific Calculator Model
EL-520W.
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 in 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.
•
Keep the calculator away from extreme heat such as on a car
dashboard or near a heater, and avoid exposing it to exces-
sively 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 a 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 up-
grading without prior notice.
NOTICE
•
SHARP strongly recommends that separate permanent
written records be kept of all important data. Data may be
lost or altered in virtually any electronic memory product
under certain circumstances. Therefore, SHARP assumes
no responsibility for data lost or otherwise rendered unusable
whether as a result of improper use, repairs, defects, battery
replacement, use after the specified battery life has expired,
or any other cause.
•
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 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.
Hard Case
DISPLAY
•
During actual use, not all symbols are displayed at the same time.
•
Certain inactive symbols may appear visible when viewed from
a far off angle.
•
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.
xy
/
r
θ
:
Indicates the mode of expression of results in the com-
plex calculation mode.
:
Indicates that data can be visible above/below the
screen. Press
[
/
]
to scroll up/down the view.
2ndF
:
Appears when
@
is pressed.
HYP
:
Indicates that
h
has been pressed and the hyper-
bolic functions are enabled. If
@H
are pressed,
the symbols “
2ndF HYP
” appear, indicating that inverse
hyperbolic functions are enabled.
ALPHA :
Appears when
K
(STAT VAR),
O
or
R
is pressed.
PRINTED IN CHINA / IMPRIMÉ EN CHINE / IMPRESO EN CHINA
04CGK (TINSE0730EHZZ)
SCIENTIFIC CALCULATOR
OPERATION MANUAL
EL-520W
MODEL
FIX/SCI/ENG:
Indicates the notation used to display a value.
DEG/RAD/GRAD:
Indicates angular units.
STAT
:
Appears when statistics mode is selected.
M
:
Indicates that a value is stored in the independent memory.
?
:
Indicates that the calculator is waiting for a numerical
value to be entered, such as during simulation calculation.
:
Appears when the calculator shows an angle as the result
in the complex calculation mode.
i
:
Indicates an imaginary number is being displayed in the
complex calculation mode.
BEFORE USING THE CALCULATOR
Key Notation Used in this Manual
In this manual, key operations are described as follows:
To specify
e
x
:
@e
To specify ln :
I
To specify F
:
Kü
Functions that are printed in orange above the key require
@
to
be pressed first before the key. When you specify the memory,
press
K
first. Numbers for input value 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 the Entry and Memories
Operation
Entry
M
A-F, X, Y
STAT*
1
(Display)
F1-F4
ANS
STAT VAR*
2
ª
×
×
×
@c
×
Mode selection
×
@∏00
*
3
@∏10
*
4
RESET switch
: Clear
×
: Retain
*
1
Statistical data (entered data).
*
2
x
¯
,
sx
,
σ
x
,
n
,
Σ
x
,
Σ
x
2
,
¯y
,
sy
,
σ
y
,
Σ
y
,
Σ
y
2
,
Σ
xy
,
r
,
a
,
b
,
c
.
*
3
All variables are cleared.
*
4
This key combination functions the same as the RESET switch.
[Memory clear key]
Press
@∏
to display the menu.
•
To clear all variables (M, A-F, X, Y, ANS,
F1-F4, STAT VAR), press
00
or
0®
.
•
To RESET the calculator, press
10
or
1®
.
The RESET operation will erase all data stored in memory, and
restore the calculator's default setting.
Entering and Correcting the Equation
[Cursor keys]
•
Press
<
or
>
to move the cursor. You can also return to
the equation after getting an answer by pressing
>
(
<
).
See the next section for using the
[
and
]
keys.
•
See ‘SET UP menu’ for cursor use in the SET UP menu.
[Insert mode and Overwrite mode in the Equation display]
•
Pressing
@‘
switches between the two editing modes:
insert mode (default); and overwrite mode. A triangular cursor
indicates that an entry will be inserted at the cursor, while the
rectangular cursor indicates to overwrite preexisting data as you
make entries.
•
To insert a number in the insert mode, move the cursor to the
place immediately after where you wish to insert, then make a
desired entry. In the overwrite mode, data under the cursor will
be overwritten by the number you enter.
•
The mode set will be retained until the next RESET operation.
[Deletion key]
•
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.
Multi-line Playback Function
Previous equations may be recalled in the normal mode. Equations
also include calculation ending instructions such as “=” and a maxi-
mum of 142 characters can be stored in memory. When the memory
is full, stored equations are deleted in the order of the oldest first.
Pressing
[
will display the previous equation and the answer.
Further pressing
[
will display preceding equations (after re-
turning to the previous equation, press
]
to view equations in
order). In addition,
@[
can be used to jump to the oldest
equation.
•
To edit an equation after recalling it, press
>
(
<
).
•
The multi-line memory is cleared by the following operations:
@c
,
@F
(including the Automatic Power Off fea-
ture), mode change, memory clear (
@∏
), RESET,
@
`
,
K
(
R
)
?
, constant calculation, differential/inte-
gral calculation, chain calculation, angle unit conversion, coordi-
nate conversion, N-base conversion, numerical value storage to
the temporary memories and independent memory, solver func-
tion and simulation calculation.
MEM
RESET
0
1
Priority Levels in Calculation
Operations are performed according to the following priority:
Q
Fractions (1
l
4, etc.)
W
∠
, engineering prefixes
E
Functions
preceded by their argument (x
-1
, x
2
, n!, etc.)
R
Y
x
,
x
¿
T
Implied
multiplication of a memory value (2Y, etc.)
Y
Functions followed by
their argument (sin, cos, etc.)
U
Implied multiplication of a function
(2sin30, etc.)
I
n
C
r
,
n
P
r
O
×
,
÷
P
+,
–
{
AND
}
OR, XOR, XNOR
q
=, M+, M
–
,
⇒
M,
|
DEG,
|
RAD,
|
GRAD, DATA, CD,
→
r
θ
,
→
xy
and other calculation ending instructions
•
If parentheses are used, parenthesized calculations have prec-
edence over any other calculations.
INITIAL SET UP
Mode Selection
m0
: Normal mode (NORMAL)
m1
: Statistic mode (STAT)
m2
: Equation mode (EQN)
m3
: Complex number mode (CPLX)
SET UP menu
Press
”
to display the SET UP menu.
•
A menu item can be selected by:
•
moving the flashing cursor by using
><
, then pressing
®
(
=
key), or
•
pressing the number key corresponding to the menu item number.
•
If
or
is displayed on the screen, press
[
or
]
to
view the previous/next menu screen.
•
Press
ª
to exit the SET UP menu.
[Determination of the Angular Unit]
The following three angular units (degrees, radians, and grads) can
be specified.
•
DEG (
°
)
: Press
”00
.
•
RAD (rad) : Press
”01
.
•
GRAD (g) : Press
”02
.
[Selecting the Display Notation and Decimal Places]
Four display notation systems are used to display calculation re-
sults: Floating point; Fixed decimal point; Scientific notation; and
Engineering notation.
•
When the FIX, SCI, or ENG symbol is displayed, the number of decimal
places (TAB) can be set to any value between 0 and 9. Displayed
values will be reduced to the corresponding number of digits.
[Setting the Floating Point Numbers System in Scientific Notation]
Two settings are used to display a floating point number: NORM1
(default setting) and NORM2. A number is automatically displayed
in scientific notation outside a preset range:
•
NORM1: 0.000000001
≤
x
≤
9999999999
•
NORM2: 0.01
≤
x
≤
9999999999
SCIENTIFIC CALCULATIONS
•
Press
m0
to select the normal mode.
•
In each example, press
ª
to clear the display. If the FIX, SCI,
or ENG indicator is displayed, clear the indicator by selecting
‘
NORM1
’
from the SET UP menu.
Arithmetic Operations
•
The closing parenthesis
)
just before
=
or
;
may be
omitted.
Constant Calculations
•
In constant calculations, the addend becomes a constant. Sub-
traction and division are performed in the same manner. For
multiplication, the multiplicand becomes a constant.
•
In the constants calculations, constants will be displayed as K.
Functions
•
Refer to the calculation examples of each function.
•
Before starting calculations, specify the angular unit.
Differential/Integral Functions
Differential and integral calculations are only available in the nor-
mal mode. For calculation conditions such as the
x
value in differ-
ential calculation or the initial point in integral calculation, only
numerical values can be entered and equations such as 2
2
cannot
be specified. It is possible to reuse the same equation over and
over again and to recalculate by only changing the conditions with-
out re-entering the equation.
•
Performing a calculation will clear the value in the X memory.
•
When performing a differential calculation, enter the formula first and
then enter the
x
value in differential calculation and the minute interval
(d
x
). If a numerical value is not specified for minute interval,
x
≠
0 will be
x
×
10
–
5
and
x
=0 will be 10
–
5
from the value of the numeric derivative.
•
When performing an integral calculation, enter the formula first
and then enter a range of integral (
a
,
b
) and subintervals (n). If a
numerical value is not specified for subintervals, calculation will
be performed using n=100.
Since differential and integral calculations are performed based on
the following equations, correct results may not be obtained, in
certain rare cases, when performing special calculations that con-
tain discontinuous points.
DRG
FSE
TAB
0
1
Exponent
Equation
→
Display
Mantissa
←
Symbol
1
2
3
4
5
6
7
