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English Operation Guide
CONTENTS
INTRODUCTION
Operational Notes .................................................. E-3
Hard Case .............................................................. E-4
DISPLAY ...................................................................... E-4
BEFORE USING THE CALCULATOR
Key Notation Used in this Manual ......................... E-5
Power On and Off .................................................. E-5
Clearing Numbers .................................................. E-5
Priority Levels in Calculation ................................. E-6
INITIAL SET UP
Mode Selection ...................................................... E-6
Selecting the Display Notation and Decimal places .. E-7
Determination of the Angular Unit ......................... E-7
SCIENTIFIC CALCULATIONS
Arithmetic Operations ............................................ E-8
Constant Calculations ............................................ E-8
Functions ............................................................... E-9
Random Numbers ................................................ E-10
Angular Unit Conversions .................................... E-10
Memory Calculations ........................................... E-10
Chain Calculations ............................................... E-11
Time, Decimal and Sexagesimal Calculations .... E-12
Coordinate Conversions ...................................... E-12
BINARY, OCTAL, DECIMAL, AND
HEXADECIMAL OPERATIONS (N-Base) ................. E-13
COMPLEX NUMBER CALCULATIONS .................... E-14
STATISTICAL CALCULATIONS
Data Entry and Correction ................................... E-16
Statistical Calculation Formulas .......................... E-17
ERROR AND CALCULATION RANGES
Errors ................................................................... E-18
Calculation Ranges .............................................. E-18
ââE-25
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BATTERY REPLACEMENT
Notes on Battery Replacement ............................ E-20
When to Replace the Batteries ............................ E-20
Caution ................................................................. E-20
Replacement Procedure ...................................... E-21
Automatic Power Off Function ............................. E-21
SPECIFICATIONS ..................................................... E-22
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INTRODUCTION
Thank you for purchasing the SHARP Scientific Calculator
Model EL-501E.
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 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.
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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
⢠Floating point system
âSymbol
⢠Scientific notation system
Mantissa
Exponent
(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 â ±9999999999, the display changes to
scientific 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
hyperbolic functions are enabled. If @ H
are pressed, the symbols â2ndF HYPâ appear,
indicating that inverse hyperbolic functions are
enabled.
DEG/RAD/GRAD: Indicates angular units and changes
each time G is pressed. The default setting
is DEG.
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()
: Appears when a calculation with parentheses is
performed 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 @ Ï 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.
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 Ï
:@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.
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).
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4×5
â
4×6+7=
3*
ª
4*5
æ
6+7=
134
â
123
134
øø
23
34â43
3 ⢠4 @º=
3×
3.
0.
5.
0.
31.
134.
1.
123.
64.
Priority Levels in Calculation
This calculator performs operations according to the following priority:
1 Functions such as sin, x2, and %
2 yx, x¿y
3 ×, ÷
4 +, â
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
unless pending calculations exceed 4.
INITIAL SET UP
Mode Selection
Normal mode: ª
Used to perform arithmetic operations and function calculations. BIN, OCT, HEX, CPLX and STAT are not displayed.
Binary, Octal, Decimal, or Hexadecimal system mode:
@ê, @î, @í or @ì
Complex number mode: @Ï
Used to perform arithmetic operations with complex numbers.
To clear this mode, press @Ï.
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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.
⢠By pressing F or Automatic power off function, the
mode is cleared and returned to the normal mode.
Selecting the Display Notation and Decimal
Places
⢠When calculation result is displayed in the floating point
system, pressing â displays the result in the scientific notation system.
Pressing â once more displays the result again in
the floating point system.
⢠Pressing @i and any value between 0 and 9
specifies the number of decimal places in the calculation result.
To clear the setting of decimal places, press @
i ..
100000÷3=
[Floating point]
[TAB set to 2]
â[Scientific notation]
â[Floating point]
ª100000/3=
@i 2
â
â@i.
33333.33333
33333.33
3.33 04
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 †| x | †9999999999
Determination of the Angular Unit
In this calculator, the following three angular units (degrees, radians, and grades) can be specified.
Press G
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SCIENTIFIC CALCULATIONS
⢠Calculate in the normal mode.
⢠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 ..
45+285÷3=
ª 45 + 285 / 3 =
18+6
=
15â8
( 18 + 6 )/
(15-8=
3.428571429
42×(â5)+120=
42 * 5 ±+ 120 =
(5×103)÷(4×10â3)= 5 E 3 / 4 E
3 ±=
140.
â90.
1250000.
Constant Calculations
⢠In the constant calculations, the addend becomes a
constant. Subtraction and division are performed in the
same manner. For multiplication, the multiplicand becomes a constant.
34+57=
45+57=
34 + 57 =
45 =
91.
102.
79â59=
56â59=
79 - 59 =
56 =
20.
â3.
56÷8=
92÷8=
56 / 8 =
92 =
7.
11.5
68×25=
68×40=
68 * 25 =
40 =
1700.
2720.
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Functions
sin60[°]=
ª 60 s
0.866025403
Ï
cosâ[rad]=
G@V/ 4
=u
0.707106781
tanâ11=[g]
G 1 @T
G
4
50.
⢠The range of the results of inverse trigonometric functions.
Ξ = sinâ1 x , Ξ = tanâ1 x
â90 †Ξ †90
DEG
Ï
ââ
2
RAD
GRAD
â100
Ξ = cosâ1 x
0 †Ξ †180
Ï
†Ξ†â
2
†Ξ †100
0
0
â€Îžâ€ Ï
†Ξ †200
(cosh 1.5 +
sinh 1.5)2 =
ª( 1.5 hu+
1.5 hs)L
20.08553692
5
tanhâ1â =
7
5/7=
@Ht
0.895879734
ln 20 =
20 I
2.995732274
log 50 =
50 l
1.698970004
e3
3 @e
20.08553692
1.7 @¡
50.11872336
6 @â+ 7 @
â=
0.309523809
=
101.7
=
1 1
â+â=
6 7
8â2
â
34 ×
52
8 ⢠2 ±- 3 â¢
4 * 5 L=
â2024.984375
=
1
â
(123) 4 =
12 ⢠3 ⢠4
@â=
6.447419591
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¿49 â 4¿81 =
49 â- 81 @Á
4=
4.
3
¿27=
27 @#
3.
4! =
4 @!
24.
500×25%=
500 * 25 @%=
125.
120 ÷400=?%
120 / 400 @%=
30.
500+(500×25%)= 500 + 25 @%=
625.
400â(400×30%)= 400 - 30 @%=
280.
Random Numbers
A pseudo-random number with three significant digits can
be generated by pressing @ `. Random number
generation is not possible when binary/octal/hexadecimal
system mode is set.
Angular Unit Conversions
Each time @ g are pressed, the angular unit
changes in sequence.
90°â [rad]
â [g]
â [°]
ª 90 @g
@g
@g
1.570796327
100.
90.
sinâ10.8 = [°]
â [rad]
â [g]
â [°]
0.8 @S
@g
@g
@g
53.13010235
0.927295218
59.03344706
53.13010235
Memory Calculations
This calculator has one independent memory (M). It is
available in the normal mode and binary, octal, hexadecimal system mode.
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⢠The independent memory is indicated by the three keys:
O, R, ;.
Before starting a calculation, clear the memory by pressing 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 ;.
⢠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.
24÷(8×2)=
(8×2)×5=
ªO 8 * 2 =O
24 /R=
R* 5 =
16.
1.5
80.
12+5
â) 2+5
+)12×2
M
ªO
12 + 5 =;
2 + 5 =±;
12 * 2 =;
R
17.
â7.
24.
34.
$1= ¥140
¥33,775=$?
$2,750=¥?
140 O
33775 /R=
2750 *R=
r = 3cm
Ïr2 = ?
3O
@V*R
L=
140.
241.25
385000.
3.
28.27433388
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
entering multiple instructions.
6+4=ANS
ANS+5
ª6+4=
+5=
10.
15.
44+37=ANS
â
S
=
AN
44 + 37 =
â
81.
9.
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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:
123.404080
degree
second
minute
Note: When the calculation or conversion result is converted, a residual may occur.
12°39â18â05
â [10]
ª 12.391805 ´
123.678 â [60]
123.678 @¨
123.404080
sin62°12â24â = [10] 62.1224 ´s
0.884635235
12.65501389
Coordinate Conversions
⢠Before performing a calculation, select the angular unit.
Rectangular coord.
Polar coord.
x=6 r=
â

ï£ y = 4 ï£ Îž = [°]
ª6a4b
@{[r ]
b[Ξ]
a[r ]
7.211102551
33.69006753
7.211102551
x=
 r = 14

â
ï£ Îž = 36[°] ï£ y =
14 a 36 b
@}[x]
b[y]
a[x]
11.32623792
8.228993532
11.32623792
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BINARY, OCTAL, DECIMAL, AND
HEXADECIMAL OPERATIONS (N-BASE)
This calculator can perform the four basic arithmetic operations, calculations with parentheses and memory calculations using binary, octal, decimal, and hexadecimal
numbers.
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. âBINâ appears.
Ï î : Converts to the octal system. âOCTâ appears.
Ï ì : Converts to the hexadecimal system. âHEXâ
appears.
Ï í : Converts to the decimal system. âBINâ,
âOCTâ, and âHEXâ disappear from the display.
Conversion is performed on the displayed value when
these keys are pressed.
Note: In this calculator, the hexadecimal numbers A â F
A
B
C
D
are entered by pressing E, â¢, â, ´,
E
F
I, and l, and displayed as follows:
A â å, B â â«, C â ç, D â â, E â é, F â Æ
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 hexadecimal 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 truncated. In the binary, octal, and hexadecimal systems, negative numbers are displayed as a complement.
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DEC(25)âBIN
ª@í 25 @ê
HEX(1AC)
â BIN
â OCT
â DEC
ª@ì 1AC
@ê
@î
@í
BIN(1010â100)
×11 =
ª@ê( 1010 - 100 )
* 11 =
10010.
HEX(1FF)+
OCT(512)=
HEX(?)
ª@ì 1FF @î+
512 =
1511.
@ì
349.
2FECâ
2C9E=(A)
+)2000â
1901=(B)
(C)
â DEC
ªO@ì 2FEC 2C9E ;
2000 1901 ;
R
@í
11001.
110101100.
654.
428.
34E.
6FF.
A4d.
2637.
COMPLEX NUMBER CALCULATIONS
To carry out addition, subtraction, multiplication, and division using complex numbers, press @Ï to select
the complex number mode.
⢠A complex number is represented in the a + bi format.
The âaâ is the real part while the âbiâ is the imaginary
part. When inputting the real part, after inputting the
number press a. When inputting the imaginary part,
after inputting 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.
⢠If the complex numbers are represented as polar coordinates, press @} after they are input with a
and b.
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CPLX
0.
@Ï
(12â6i) + (7+15i) 12 a 6 ±b+ 7 a 15 b
â (11+4i) =
- 11 a 4 b=
8.
b
5.
a
8.
6×(7â9i) ×
(â5+8i) =
6 a* 7 a 9 ±b*
222.
5 ±a 8 b=
b
606.
16×(sin30°+icos30°) 16 a* 30 sa 30ub
=
(sin60°+icos60°)
/ 60 sa 60 ub
13.85640646
=
b
8.
8 a 70 b@}
+ 12 a 25 b@}
18.5408873
=@{ [r]
b [Ξ]
42.76427608
r1 = 8, Ξ1 = 70°
r2 = 12, Ξ2 = 25°
â
r = ?, Ξ = ?°
(1 + i)
â
r = ?, Ξ = ?°
1 a 1 b=
@{ [r]
b [Ξ]
1.
1.414213562
45.
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STATISTICAL CALCULATIONS
Press @ Æ to select statistics mode.
The following statistics can be obtained:
xâ
Mean of samples (x data)
sx
Ïx
n
Σx
Σx2
DATA
95
80
80
75
75
75
50
x=
Ïx=
n=
Σx=
Σx2=
sx=
sx2=
Sample standard deviation (x data)
Population standard deviation (x data)
Number of samples
Sum of samples (x data)
Sum of squares of samples (x data)
@Æ
95 k
80 * 2 k
75 * 3 k
50 k
~
@p
n
@z
@w
£
L
STAT
0.
1.
3.
6.
7.
75.71428571
12.37179148
7.
530.
41200.
13.3630621
178.5714286
Data Entry and Correction
Entered data are kept in memory until @ Æ or
F 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 Correction]
Correction prior to pressing k:
Delete incorrect data with ª.
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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).
DATA
30
40
40
50
â
DATA
30
45
45
45
60
Fª@Æ
30 k
40 * 2 k
50 k
STAT
0.
1.
3.
4.
50 @J
40 * 2 @J
3.
1.
45 * 3 k
60 k
4.
5.
Statistical Calculation Formulas
Σx
xâ =
n
sx =
Ïx =
Σx2 â nxâ2
nâ1
Σx2 â nxâ2
n
Σx = x1 + x2 + ··· + xn
Σx2 = x12 + x22 + ··· + xn2
In the statistical calculation formulas, an error will occur
when:
⢠the absolute value of the intermediate result or calculation result is equal to or greater than 1 × 10100.
⢠the denominator is zero.
⢠an attempt is made to take the square root of a negative
number.
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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 âEâ.
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 yx, x¿ , ex, 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.
⢠Calculation ranges
±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 10â99, the value is considered to be 0 in calculations and in the display.
Function
Calculation Range
DEG:
sin x,
tan x
RAD:
GRAD:
cos x
DEG:
RAD:
GRAD:
| x | †4.499999999 × 1010
(tan x : | x | â 90 (2nâ1))*
| x | †785398163.3
Ï
(tan x : | x | â â (2nâ1))*
2
| x | †4.999999999 × 1010
(tan x : | x | â 100 (2nâ1))*
| x | †4.500000008 × 1010
| x | †785398164.9
| x | †5.000000009 × 1010
sinâ1x, cosâ1x
|x|â€1
tanâ1x, 3¿x
In x, log x
ex
| x | < 10100
10â99 †x < 10100
â10100 < x †230.2585092
10x
â10100 < x < 100
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Function
sinh x,
cosh x
Calculation Range
| x | †230.2585092
tanh x
| x | < 10100
sinhâ1 x
| x | < 5 × 1099
coshâ1 x
1 †x < 5 × 1099
tanhâ1 x
|x|<1
x2
| x | < 1050
¿x
0 †x < 10100
1/x
| x | < 10100 (x â 0)
n!
0 †n †69*
âD.MS
âDEG
| x | < 1 × 10100
x, y â r, Ξ
| x |, | y | < 1050
y
| âx |, x2 + y2 < 10100
100
r, Ξ â x, y
0 †r < 10
DEG:
| Ξ | < 4.5 × 1010
RAD:
| Ξ | †785398163.3
GRAD : | Ξ | < 5 × 1010
DRG |
DEGâRAD, GRADâDEG: | x | < 10100
Ï
RADâGRAD: | x | < â2 × 1098
yx
x¿y
⢠y > 0:
⢠y = 0:
⢠y < 0:
â10100 < x lny †230.2585092
0 < x < 10100
x=n
1
(0 < | x | < 1: âx = 2nâ1, x â 0)*,
â10100 < x ln | y | †230.2585092
⢠y > 0:
â10100 < 1âx lny †230.2585092 (x â 0)
⢠y = 0:
0 < x < 10100
⢠y < 0:
x = 2nâ1
1
(0 < | x | < 1 : â
x = n, x â 0)*,
1
â10100 < â
x ln | y | †230.2585092
(A+Bi)+(C+Di) | A ± C | < 10100
(A+Bi)â(C+Di) | B ± D | < 10100
(A+Bi)×(C+Di)
(AC â BD) < 10100
(AD + BC) < 10100
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Function
(A+Bi)÷(C+Di)
âDEC
âBIN
âOCT
âHEX
Calculation Range
AC + BD
< 10100
C2 + D2
BC â AD
< 10100
C2 + D2
2
2
C +D â 0
DEC
BIN
OCT
HEX
: | x | †9999999999
: 1000000000 †x †1111111111
0 †x †111111111
: 4000000000 †x †7777777777
0 †x †3777777777
: FDABF41C01 †x †FFFFFFFFFF
0 †x †2540BE3FF
* n: integer
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 the calculator.
⢠Batteries are factory-installed before shipment, and may
be exhausted before they reach the service life stated in
the specifications.
When to Replace the Batteries
If the display has poor contrast, the batteries require replacement.
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 in contact with
your skin or clothes, immediately wash with clean water.
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⢠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 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 display does not appear as shown, reinstall the
batteries 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.
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SPECIFICATIONS
Calculations:
Scientific calculations, binary/octal/hexadecimal number calculations, complex number calculations, statistical calculations, etc.
Internal calculations:
Mantissas of up to 10 digits
Pending operations:
4 calculations
Power source:
3V ¶ (DC):
Alkaline batteries (LR44 or
equivalent) × 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.
Operating temperature: 0°C â 40°C (32°F â 104°F)
External dimensions:
78.6 mm (W) × 144 mm (D) ×
11.6 mm (H)
3-3/32â (W) × 5-21/32â (D) × 15/32â
(H)
Weight:
Approx. 75 g (0.17 lb)
(Including batteries)
Accessories:
Batteries × 2 (installed), operation manual, quick reference card
and hard case
SHARP CORPORATION
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