SR-281 / SR-282

Scientific Calculator

General Guide.................................................................................... 2
Turning on or off .............................................................................. 2
Battery replacement......................................................................... 2
Auto power-off function.................................................................... 2
Reset operation ............................................................................... 2
Contrast adjustment......................................................................... 3
Display readout................................................................................ 3
Before Starting Calculation .............................................................. 4
Using " MODE " keys....................................................................... 4
Using " 2nd " Keys........................................................................... 4
Corrections ...................................................................................... 4
Undo function .................................................................................. 4
Replay function................................................................................ 5
Memory calculation.......................................................................... 5
Order of operations.......................................................................... 6
Accuracy and Capacity .................................................................... 7
Error conditions ............................................................................... 9
Basic Calculations ............................................................................ 9
Arithmetic calculation..................................................................... 10
Parentheses calculations............................................................... 10
Percentage calculation .................................................................. 11
Display notations ........................................................................... 11
Scientific Functional Calculations ................................................. 13
Logarithms and Antilogarithms ...................................................... 13
Fraction calculation ....................................................................... 13
Angle unit conversions .................................................................. 14
Sexagesimal ↔ Decimal transformation........................................ 15
Trigonometric / Inverse-Tri. functions ............................................ 15
Hyperbolic / Inverse-Hyp. functions............................................... 16
Coordinates transformation ........................................................... 16
Probability...................................................................................... 17
2 3 y
Other functions ( 1/x, , 3 , X , x , x , x , INT, FRAC ) ........ 18
Unit Conversion ............................................................................. 19
Physics constants .......................................................................... 19
Base–n calculations........................................................................ 24
Bases conversions ........................................................................ 25
Block Function ............................................................................... 25
Basic arithmetic operations for bases............................................ 27
Negative expressions .................................................................... 27
Logical operation ........................................................................... 27
Statistical Calculations ................................................................... 27
Entering data ................................................................................. 28

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 Displaying results .......................................................................... 28
Deleting data ................................................................................. 31
Editing data.................................................................................... 32
FULL message............................................................................... 32
Complex Calculations..................................................................... 33

General Guide

Turning on or off
To turn the calculator on, press [ ON/C ] ; To turn the calculator off,
press [ 2nd ] [ OFF ].
Battery replacement
SR-281 is powered by two alkaline batteries (GP76A or LR44).
SR-282 is powered two AA-size ( UM-3 ) batteries. If the display
becomes dim and difficult to read, the batteries should be replaced as
soon as possible.
To replace batteries :
1) Slide the battery compartment cover in the direction indicated by
the arrow and remove it.
2) Remove the old batteries and install new ones with polarity in
correct directions, then replace the battery compartment cover
and press [ ON/C ].
Auto power-off function
This calculator automatically turns it off when not operated for
approximately 6~9 minutes. It can be reactivated by pressing [ ON/C ]
key and the display, memory, settings are retained.
Reset operation
If the calculator is on but you get unexpected results, press [ MODE ]
[ 4 ] ( RESET ) in sequence. A message appears on the display to
confirm whether you want to reset the calculator and clear memory
contents.

RESET : N Y

Move the cursor to " Y " by [ ], then press [ ] to clear all

variables, pending operations, statistical data, answers, all previous
entries, and memory; To cancel the reset operation without clearing
the calculator, please choose " N ".
If the calculator is lock and further key operations becomes impossible,
please press [ 0 ] [ CE ] at the same time to release the condition. It will
return all settings to default settings.

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 Contrast adjustment
Pressing the [ – ] or [ + ] following [ MODE ] key can make the contrast
of the screen lighter or darker. Holding either key down will make the
display become respectively lighter or darker.
Display readout
The display comprises two lines and indicators. The upper line is a dot
display up to 128 characters. The lower line is capable of displaying a
result of up to 12 digits, as well as 2-digits positive or negative
exponent.
When formulas are input and executed the calculation by [ ],
they are displayed on the upper line, and then results are shown on
the lower line.
The following indictors appear on the display to indicate you the
current status of the calculator.
Indicator Meaning
M Running memory
– Result is negative
E Error
STO Storing variable mode is active
RCL Recalling variable mode is active
2nd 2nd set of function keys are active
HYP Hyperbolic-trig function will be calculated
ENG Engineering symbol notation
CPLX Complex number mode is active
CONST Display physics constants
DEGRAD Angle mode : DEGrees, GRADs, or RADs
BIN Binary base
OCT Octal base
HEX Hexadecimal base
( ) Open parentheses
TAB Number of decimal places displayed is fixed
STAT Statistics mode is active
REG Regression mode is active
EDIT Statistics data is being edited
CPK CPK : Process capability
CP : Precision capability
USL Set upper specification limit
LSL Setting lower specification limit
i Imaginary part
Allow to use undo function

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 Before Starting Calculation

Using " MODE " keys

Press [ MODE ] to display mode menus when specifying an operating
mode ( " 1 MAIN ", " 2 STAT ", " 3 CPLX ", " 4 RESET " ) or the
engineering symbol notation ( " 5 ENG " ).
1 MAIN : Use this mode for basic calculations, including scientific
calculations and Base–n calculations.
2 STAT : Use this mode to perform single–variable and
paired–variable statistical calculations and regression
calculations.
3 CPLX : Use this mode to perform complex number calculation.
4 RESET : Use this mode to perform reset operation.
5 ENG : Use this mode to allow engineering calculations utilizing
engineering symbol.
Give " 2 STAT " as an example :
Method 1 : Press [ MODE ] and then scroll through the menus using
[ ] or [ 2nd ] [ ] until " 2 STAT " is underlined,
then enter the desired mode by pressing [ ].
Method 2 : Press [ MODE ] and then key in directly the number of the
mode, [ 2 ] , to enter the desired mode immediately.
Using " 2nd " Keys
When you press [ 2nd ], the " 2nd " indicator shown in the display is to
tell you that you will be selecting the second function of the next key
you press. If you press [ 2nd ] by mistake, simply press [ 2nd ] again to
remove the " 2nd " indicator.
Corrections
If you have made a mistake when entering a number (but you have not
yet pressed an arithmetic operator key), just press [ CE ] to clear the
last entry then input it again, or delete individual digits by the
backspace key [ ], or clear all entry by [ ON/C ].
After making corrections, input of the formula is complete, the answer
can be obtained by pressing [ ]. You can also press [ ON/C ] to
clear the immediate results completely (except clearing memory). If
you press the wrong arithmetic operation key, just press the correct
key to replace it.
Undo function
The unit offers an undo function which allows you to undo some of the
errors you just have made.

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 When a character which is just deleted by [ ], an entry which is just
cleared [ CE ], or which is just cleared by [ ON/C ], the " " indicator
shown in the display is to tell you that you can press [ 2nd ] [ ] to
cancel the operation.
Replay function
This function stores operations that just have been executed. After
execution is completed, pressing [ ] or [ 2nd ] [ ] key will
display the operation executed. Pressing [ ] will display the
operation from the beginning, with the cursor located under the first
character. Pressing [ 2nd ] [ ] will display the operation from the
end, with the cursor located at the space following the last character.
You can continue moving the cursor by [ ] or [ 2nd ] [ ] and
editing values or commands for subsequent execution.
Memory calculation
Memory variable
The calculator has nine memory variables for repeated use -- A, B, C,
D, E, F, M, X, Y. You can store a real number in any of the nine
memory variables.
• [ STO ] + [ A ] ~ [ F ], [ M ], [ X ] ~ [ Y ] lets you store values to
variables.
• [ RCL ] + [ A ] ~ [ F ], [ M ], [ X ] ~ [ Y ] recalls the value of the
variable.
• [ 0 ] [ STO ] + [ A ] ~ [ F ], [ M ], [ X ] ~ [ Y ] clears the content to a
specified memory variable.
¾(1) Put the value 30 into variable A
DEG
30 [ STO ] [ A ]
3 0 ÆA
30.

¾(2) Multiple 5 to variable A, then put the result into variable B

5 [ x ] [ RCL ] [ A ] [ ] DEG

5 ¼A =
150.
DEG
[ STO ] [ B ]
1 5 0 ÆB
150.

¾ (3) Clear the value of variable B

DEG
0 [ STO ] [ B ]
0 ÆB
0.

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 [ RCL ] [ B ] [ ] DEG

B=
0.

Running memory
You should keep the following rules in mind when using running
memory.
• Press [ M+ ] to add a result to running memory and the " M " indicator
appears when a number is stored in the memory. Press [ MR ] to
recall the content of running memory.
• Recalling from running memory by pressing [ MR ] key does not
affect its contents .
• Running memory is not available when you are in statistics mode.
• The memory variable M and running memory utilize the same
memory area.
• In order to replace the content of the memory with the displayed
number, please press [ X M ] key.
• To clear the content of running memory, you can press [ 0 ] [ X M ],
[ CE ] [ X M ] or [ 0 ] [ STO ] [ M ] in sequence.
¾[ ( 3 x 5 ) + ( 56 7 ) + ( 74 – 8 x 7 ) ] = 41
0[X M] DEG

0.

3 [ x ] 5 [ M+ ] 56 [ ] 7 [ M+ ] 74 DEG
[ – ] 8 [ x ] 7 [ M+ ] 7 4 – 8¼7 M+
M 18.

[ MR ] DEG

M
M 41.

0[X M] DEG

0.

(Note) : Besides pressing [ STO ] or [ X M ] key to store a value, you

can also assign values to memory variable M by [ M+ ].
However, when [ STO ] [ M ] or [ X M ] is used, previous
memory contents stored in variable M are cleared and
replaced it with the newly assigned value. When [ M+ ] is used,
values is added to present sum in memory.
Order of operations
Each calculation is performed in the following order of precedence:

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 1) Fractions
2) Expression inside parentheses.
3) Coordinates transformation ( P R , R P )
4) Type A functions which are required entering values before
2
pressing the function key, for example, x ,1/x, Ӹ, x!, %, RND,
ENG, , , x ', y ' .
y
5) x , X

6) Type B functions which are required pressing the function key

–1 –1 –1
before entering, for example, sin, cos, tan, sin , cos , tan ,
–1 –1 –1
sinh, cosh, tanh, sinh , cosh , tanh , log, ln, FRAC, INT, Ѕ,
X X
3
, 10 , e , NOT, EXP, DATA in STAT mode.
7) + / –, NEG
8) nPr, nCr
9) x,
10) +, –
11) AND, NAND –-- only Base–n mode
12) OR, XOR, XNOR --- only Base–n mode
Accuracy and Capacity
Output digits : Up to 12 digits.
Calculating digits : Up to 14 digits
In general, every reasonable calculation is displayed up to 12 digits
± 99
mantissa, or 12-digits mantissa plus 2-digits exponent up to 10 .
Numbers used as input must be within the range of the given function
as follow :
Functions Input range
sin x Deg : x < 4.5 x 10 10 deg
cos x
tan x
Rad : x < 2.5 x 10 8Ӹrad
Grad : x < 5 x 10 10 grad
however, for tan x
Deg : x ≠ 90 (2n+1)
π
Rad : x ≠ 2 (2n+1)
Grad : x ≠ 100 (2n+1), (n is an integer)
sin –1 x, cos –1 x x 싪 1
tan –1 x x < 1 x 10 100
sinh x, cosh x x 싪 230.2585092

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 tanh x x < 1 x 10 100
sinh –1 x x < 5 x 10 99
cosh –1 x 1 싪 x < 5 x 10 99
tanh –1 x x <1
log x, ln x 1 x 10 –99 싪 x < 1 x 10 100
10 x –1 x 10 100 < x < 100
ex –1 x 10 100 < x 싪 230.2585092
x 0 싪 x < 1 x 10 100
x2 x < 1 x 10 50
x3 x < 2.15443469003 x 10 33
1/x x < 1 x 10 100, x ≠ 0
3
x x < 1 x 10 100
X! 0 싪 x 싪 69, x is an integer.
R P 100
x 2 + y 2 < 1 x 10
P R 0 싪 r < 1 x 10
100

DegΚཎθ ཎ< 4.5 x 10 deg

10

RadΚཎθ ཎ< 2.5 x 10 Ӹrad

8

GradΚཎθ ཎ< 5 x 10 grad

10

however, for tan x

DegΚཎθ ཎ≠ 90 (2n+1)

RadΚཎθ ཎ≠ π (2n+1)
2
GradΚཎθ ཎ≠ 100 (2n+1), (n is an integer)

ཎDཎ, M, S < 1 x 10
100
, 0 싪 M, S
x < 1 x 10 100
xy x > 0 : –1 x 10100 < y log x < 100
x=0:y>0
x < 0 : y = n, 1/(2n+1), n is an integer.
but –1 x 10100 < y log ཎxཎ < 100
x y 100 1
y > 0 : x ≠ 0, –1 x 10 < log y < 100
x
y=0:x>0
y < 0 : x=2n+1, l/n, n is an integer.(n≠0)

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 1
log ཎyཎ< 100
100
but –1 x 10 <
x
a b/c InputΚTotal of integer, numerator and
denominator must be within 12 digits
(includes division marks)
ResultΚResult displayed as fraction for
integer when integer, numerator and
denominator are less than 1 x 10 12
nPr, nCr 0 싪 r 싪 n, n 싪10 100, n,r are integers.
50 50
STAT x < 1 x 10 , y < 1 x 10
Ӻx,Ӻy, x , y ,a, b, r : n ≠ 0 ;
Sx, SyΚn ≠ 0, 1 ; x n = 50 ; y n = 50 ;
Number of repeats ” 255, n is an integer.
DEC – 2147483648 싪 X 싪 2147483647
BIN 0 싪 X 싪 01111111111111111111111111111111
(for zero or positive)
10000000000000000000000000000000 싪
X 싪11111111111111111111111111111111
(for negative)
OCT 0 싪 X 싪 17777777777 (for zero or positive)
20000000000 싪 X 싪 37777777777
(for negative)
HEX 0 싪 X 싪 7FFFFFFF ( for zero or positive)
80000000 싪 X 싪 FFFFFFFF (for negative)

Error conditions
Error message “ E ” will appear on the display and further calculation
becomes impossible when any of the following condition occur.
1) You attempted to divide by 0
2) When allowable input range of function calculations exceeds the
range specified
3) When result of function calculations exceeds the range specified
4) When the [ ( ] key is used more than 13 levels in a single
expression
5) When USL < LSL value
To release the above errors, please press [ ON/C ].

Basic Calculations
Use MAIN ( [ MODE ] 1 ( MAIN ) ) mode for basic calculations.

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 Arithmetic calculation
Arithmetic operations are performed by pressing the keys in the same
sequence as in the expression.
¾7 + 5 x 4 = 27
7[+]5[x]4[ ] DEG

7 + 5¼4 =
2 7.

For negative values, press [ +/– ] after entering the value; You can
enter a number in mantissa and exponent form by [ EXP ] key.
¾2.75 x 10 – 5 = 0.0000275
2.75 [ EXP ] 5 [ +/– ] [ ] DEG

2 . 7 5E–05=
0.0 0 0 0 2 7 5
12 –11
Results greater than 10 or less than 10 are displayed in
exponential form.
¾12369 x 7532 x 74103 =126903680612720
= 6.90368061272 x 10
DEG
12369 [ x ] 7532 [ x ] 74103
[ ] 1 2 3 6 9¼7 5 3 2¼7 12
6.9 0 3 6 8 0 6 1 2 7 2

Parentheses calculations
Operations inside parentheses are always executed first. SR-281 /
SR-282 can use up to 13 levels of consecutive parentheses in a single
calculation.
Closed parentheses occurring immediately before operation of the [ ) ]
key may be omitted, no matter how many are required.
¾2 x { 7 + 6 x ( 5 + 4 ) } = 122
2[(]7[+]6[(]5[+]4[ ] DEG

2¼ ( 7 + 6¼ ( 5 + 4 =
122.

(Note) : A multiplication sign " x " occurring immediately before an

open parenthesis can be omitted.
The correct result cannot be derived by entering [ ( ] 2 [ + ] 3 [ ) ] [ EXP ]
2. Be sure to enter [ x ] between the [ ) ] and [ EXP ] in the below
example.

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 ¾( 2 + 3 ) x 10 2 = 500
DEG
[ ( ] 2 [ + ] 3 [ ) ] [ x ] [ EXP ] 2
[ ] ( 2 + 3 ) ¼1 E 0 2 =
50 0.

Percentage calculation
[ 2nd ] [ % ] divides the number in the display by 100. You can use this
key sequence to calculate percentages, add-ons, discounts, and
percentage ratios.
¾120 x 30 % = 36
120 [ x ] 30 [ 2nd ] [ % ] [ ] DEG

1 2 0¼3 0%=
36.

¾88 55 % = 160
88 [ ] 55 [ 2nd ] [ % ] [ ] DEG

88 5 5%=
160.

Display notations
The calculator has the following display notations for the display value.
Fixed-point / Floating Notations
To specify the number of decimal places, press [ 2nd ] [ TAB ] and then
a value indicating the number of places ( 0~9 ). Values are displayed
rounded off to the place specified. To return floating setting, press
[ 2nd ] [ TAB ] [ • ].
Scientific Notation
To change the display mode between floating and scientific notation,
press [ F↔E ].
Engineering Notation
Pressing [ ENG ] or [ 2nd ] [ ] will cause the exponent display for
the number being displayed to change in multiples of 3.
¾6 7 = 0.85714285714…
6[ ]7[ ] DEG

6 7 =
0.8 5 7 1 4 2 8 5 7 1 4
DEG TAB
[ 2nd ] [ TAB ] 4
6 7 =
0.8 5 7 1

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 DEG TAB
[ 2nd ] [ TAB ] 2
6 7 =
0.8 6
DEG
[ 2nd ] [ TAB ] [ • ]
6 7 =
0.8 5 7 1 4 2 8 5 7 1 4

[ F↔E ] DEG

6 7 =
8.5 7 1 4 2 8 5 7 1 4 3
DEG
[ ENG ]
–03
857. 1 4 2 8 5 7 1 4 3
DEG
[ 2nd ] [ ] [ 2nd ] [ ]
03
0.0 0 0 8 5 7 1 4 2 8 5

Engineering Symbol Notation

Each time you specify the ENG mode, a displayed result is
automatically shown with the corresponding engineering symbol.
yotta 24 zetta 21 exa 18 peta 15 tera 12 giga
= 10 , Z = 10 , E = 10 , P = 10 , T = 10 , G = 10
Y
9 mega 6 kilo 3 milli –3 –6 micro
, = 10 , = 10 ,
M K m = 10 , µ = 10 ,
nano –9 – 12 pico femto – 15 atto
– 18
n = 10 , p = 10 , f = 10 , a = 10 ,
zepto – 21 yocto – 24
= 10 , y = 10
z
Perform the following operation to specify engineering symbol
notation.
[ MODE ] 5 ( ENG )
To exit from this mode, press [ MODE ] 5 once again.
¾6 7 = 0.85714285714…
ENG DEG
[ MODE ] 5

0.

6[ ]7[ ] ENG DEG

6 7 = m
8 5 7. 1 4 2 8 5 7 1 4 3
ENG DEG
[ ENG ]
µ
8 5 7 1 42. 8 5 7 1 4 3

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 ENG DEG
[ 2nd ] [ ] [ 2nd ] [ ] [ 2nd ]
[ ] K
0.0 0 0 8 5 7 1 4 2 8 5

Scientific Functional Calculations

Use MAIN ( [ MODE ] 1 ( MAIN ) ) mode for scientific function
calculations.
Logarithms and Antilogarithms
The calculator can calculate common and natural logarithms and
x x
anti-logarithms using [ log ], [ ln ], [ 2nd ] [ 10 ], and [ 2nd ] [ e ].
¾ln 7 + log 100 = 3.94591014906
[ ln ] 7 [ + ] [ log ] 100 [ ] DEG

l n7+ l og100
3.9 4 5 9 1 0 1 4 9 0 6

¾10 2 + e –5 = 100.006737947
[ 2nd ] [ 10 X ] 2 [ + ] [ 2nd ] [ e X ] 5 DEG

[+/–][ ] 10 ^ 2 + e ^ – 5 =
1 0 0.0 0 6 7 3 7 9 4 7

Fraction calculation
Fraction value display is as follow :
5 5
5 ω12 Display of 56 Ж 5 ω12 Display of 56
12 12

(Note): Values are automatically displayed in decimal format whenever

the total number of digits of a fractional values ( integer +
numerator + denominator + separator marks ) exceeds 12.
To enter a mixed number, enter the integer part, press [ a b/c ], enter
the numerator, press [ a b/c ], and enter the denominator ; To enter an
improper fraction, enter the numerator, press [ a b/c ], and enter the
denominator.
2 5 8
¾7 3 + 14 7 = 22 21
DEG
7 [ a b/c ] 2 [ a b/c ] 3 [ + ] 14 [ a b/c ]
5 [ a b /c ] 7 [ ] 7 2 3+14 5 7
22 8 21.

During a fraction calculation, if the figure is reducible, a figure is

reduced to the lowest terms after pressing a function command key
( [ + ], [ – ], [ x ] or [ ] ) or the [ ] key. By pressing [ 2nd ]

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 [ d/e ], the displayed value will be converted to the improper fraction
and vice versa. To convert between a decimal and fractional result,
press [ a b/c ].
2 1 9
¾4 4 = 4 2 = 4.5 = 2
DEG
4 [ a b /c ] 2 [ a b /c ] 4 [ ]
4 2 4 =
4 1 2.
DEG
[ a b /c ]
4 2 4 =
4.5

d /e ] DEG
[ 2nd ] [
4 2 4 =
9 2.

d /e ] DEG
[ 2nd ] [
4 2 4=
4 1 2.

Calculations containing both fractions and decimals are calculated in

decimal format.
4
¾8 5 + 3.75 = 12.55
DEG
8 [ a b/c ] 4 [ a b/c ] 5 [ + ] 3.75
[ ] 8 4 5+3 . 75=
1 2.5 5

Angle unit conversions

The calculator enables you to convert an angle unit among
degrees(DEG), radians(RAD), and grads(GRAD).
The relation among the three angle units is :
180 ° =Ӹrad = 200 grad
1) To change the default setting to another setting, first press [ 2nd ]
[ DRG ] key repeatedly until the angle unit you want is indicated in
the display.
2) After entering a value, press [ 2nd ] [ DRG ] repeatedly until the
unit you want is displayed.
¾90 deg. = 1.57079632679 rad. = 100 grad.
DEG
[ 2nd ] [ DRG ]

0.

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 RAD
90 [ 2nd ] [ DRG ]
O
9 0 =
1.5 7 0 7 9 6 3 2 6 7 9
GRAD
[ 2nd ] [ DRG ]
1 . 5 707963267
100.

Sexagesimal ↔ Decimal transformation

The calculator enables you to convert the sexagesimal figure (degree,
minute and second) to decimal notation by pressing [ ] or
convert the decimal notation to the sexagesimal notation by [ 2nd ]
[ ].
Sexagesimal figure value display is as follow :
ʜ ʜʜ Represent 125 degrees (D),
125 … 45 30 55
45 minutes(M), 30.55 seconds(S)
(Note) : The total digits of D, M and S and separator marks must be
within 12 digits, or the sexagesimal couldn't be shown
completely.

¾12.755 = 12 † 45 l 18 l l
DEG
12.755 [ 2nd ] [ ]

† l ll
12 45 18

¾2 † 45 l 10.5 l l = 2.75291666667

DEG
2[ ] 45 [ ] 10.5 [ ]

2.7 5 2 9 1 6 6 6 6 6 7

Trigonometric / Inverse-Tri. functions

SR-281 / SR-282 provides standard trigonometric functions and
–1 –1 –1
inverse trigonometric functions - sin, cos, tan, sin , cos and tan .
(Note) : When using those keys, make sure the calculator is set for the
angle unit you want.
¾sin 30 deg.= 0.5
[ sin ] 30 [ ] DEG

s i n30=
0.5

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 2
¾3 cos ( 3 π rad) = – 1.5

3 [ cos ] [ ( ] 2 [ x ] [ 2nd ] [ π ] [ ] RAD

3[ ] 3 ¼ c o s ( 2 ¼π 3=
– 1.5

¾3 sin –1 0.5 = 90 deg

3 [ 2nd ] [ sin –1 ] 0.5 [ ] DEG

3 ¼ s i n –1 0 . 5 =
90 .

Hyperbolic / Inverse-Hyp. functions

SR-281 / SR-282 uses [ 2nd ] [ HYP ] to calculate the hyperbolic
–1
functions and inverse-hyperbolic functions - sinh, cosh, tanh, sinh ,
–1 –1
cosh and tanh .
(Note) : When using those keys, make sure the calculator is set for the
angle unit you want.
¾cosh 1.5 + 2 = 4.35240961524
DEG
[ 2nd ] [ HYP ] [ cos ] 1.5 [ + ] 2
[ ] c os h1 . 5+2=
4.3 5 2 4 0 9 6 1 5 2 4

¾sinh –1 7 = 2.64412076106
–1 DEG
[ 2nd ] [ HYP ] [ 2nd ] [ sin ]7
–1
[ ] s i nh1 7=
2.6 4 4 1 2 0 7 6 1 0 6

Coordinates transformation
Rectangular Coordinates Polar Coordinates

x + y i = r (cosӰ+ i sinӰ)
(Note) : When using those key, make sure the calculator is set for the
angle unit you want.
The calculator can perform the conversion between rectangular
coordinates and polar coordinates by [ 2nd ] [ P R ] and [ 2nd ]
[ R P ].

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 ¾
If x = 5, y = 30,
o
what are r, ? Ans : r = 30.4138126515, =
80.537677792
[ 2nd ] [ R P ] 5 [ 2nd ] [ ] 30 DEG ( )

R P( 5 ,
30

[ ] DEG

r
30. 4 1 3 8 1 2 6 5 1 5

[ 2nd ] [ x ↔y ] DEG

θ
8 0. 5 3 7 6 7 7 7 9 2

¾
If r = 25, = 56
o
what are x, y ? Ans : x = 13.9798225868, y =
20.7259393139
DEG ( )
[ 2nd ] [ P R ] 25 [ 2nd ] [ ] 56
P R ( 2 5 ,
5 6

[ ] DEG

X
13. 9 7 9 8 2 2 5 8 6 8

[ 2nd ] [ x ↔y ] DEG

Y
20.72 5 9 3 9 3 1 3 9

Probability
This calculator provides the following probability functions :
[ nPr ] Calculates the number of possible permutations of n item
taken r at a time.
[ nCr ] Calculates the number of possible combinations of n items
taken r at a time.
[ X! ] Calculates the factorial of a specified positive integer n,
where nЉ69.
[ RND ] Generates a random number between 0.000 and 0.999
7!
¾[ ( 7 − 4 ) ] ! = 840
7 [ 2nd ] [ nPr ] 4 [ ] DEG

7P4 =
840.
7!
¾4 ! [ ( 7 − 4 ) ] ! = 35

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 7 [ 2nd ] [ nCr ] 4 [ ] DEG

7C4 =
35.

¾5 ! = 120
5 [ 2nd ] [ X ! ] [ ] DEG

5 !
120.

¾Generates a random between 0.000 ~ 0.999

DEG
[ 2nd ] [ RND ]
Rnd
0.4 4 9
2 3 y
Other functions ( 1/x, , 3
, X
, x , x , x , INT,
FRAC )
The calculator also provides reciprocal ( [ 2nd ] [ 1/x ] ), square root
( [ Ѕʳ ] ), cubic root ( [ 2nd ] [ 3 ] ), universal root ( [ 2nd ] [ X ] ),
2 3 y
square ( [ x ] ), cubic ( [ 2nd ] [ x ] ), and exponentiation ( [ x ] )
functions.
1
¾1.25 = 0.8
1.25 [ 2nd ] [ 1 / x ] [ ] DEG
–1
1 . 25
0.8

¾2 2+ 4 + 21 + 3 125 + 5 3= 139

2 [ x 2 ] [ + ] [ Ѕ ] [ ( ] 4 [ + ] 21 [ ) ] DEG
2
[ + ] [ 2nd ] [ 3 ] 125 [ + ] 5 [ 2nd ] 2 +Ѕ ( 4 + 2 1 ) +
[x3][ ] 1 39 .

¾7 5 + 4 625 = 16812

7[xy]5[+]4[ X ] 625 [ ] DEG
y X
7 x 5 +4 Ѕ6 2 5 =
1 6 8 12 .

INT Indicate the integer part of a given number

FRAC Indicate the fractional part of a given number
¾INT ( 10 8 ) = INT ( 1.25 ) = 1
[ 2nd ] [ INT ] 10 [ ]8[ ] DEG

I NT ( 1 0 8=
1.

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 ¾FRAC ( 10 8 ) = FRAC ( 1.25 ) = 0.25
[ 2nd ] [ FRAC ] 10 [ ]8[ ] DEG

FRAC ( 1 0 8=
0.2 5

Unit Conversion
The calculator has a built-in unit conversion feature that enables you
to convert numbers among different units.
1. Enter the number you want to convert.
2. Press [ CONV ] to display the menu. There are 7 menus, covering
distance, area, temperature, capacity, weight, energy, and
pressure.
3. Use the [ CONV ] to scroll through the list of units until a
appropriate units menu is shown, then [ ].
4. Pressing [ ] or [ 2nd ] [ ] can convert the number to
another unit.
¾1 y d 2 = 9 f t 2 = 0.00000083612 km 2
DEG
1 [ CONV ] [ CONV ] [ ][ ]
2 2 2
f t y d m
1.
DEG
[ 2nd ] [ ]
2 2 2
f t y d m
9.
DEG
[ ][ ][ ]
2
km h e c t a r e s
0.0 0 0 0 0 0 8 3 6 1 2

Physics constants
You can use 136 physics constants in your calculations. With the
following constants :

Data is referred to Peter J.Mohr and Barry N.Taylor, CODATA

Recommended Values of the Fundamental Physical Constants:1998,
Journal of Physical and Chemical Reference Data,Vol.28, No.6,1999
and Reviews of Modern Physics,Vol.72, No.2, 2000.

No. Quantity Symbol Value, Unit

1. Speed of light in vacuum c 299792458 m s –1
2. Magnetic constant µ0 1.2566370614 x10 –6 N A –2
3. Electric constant ε0 8.854187817 x 10 –12 F m –1
Characteristic impedance 376.730313461 ͈
4. Z0
of vacuum

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 Newtonian constant of ȉ1 ȉ2
5. G 6.67310 x10 –11 m 3 kg s
gravitation
6. Planck constant K 6.6260687652 x10 –34 J s
7. Planck constant over 2 pi h 1.05457159682 x10 –34 J s
8. Avogadro constant NA 6.0221419947 x10 23 mol –1
9. Planck length lp 1.616012 x10 –35 m
10. Planck time tp 5.390640 x10 –44 s
11. Planck mass mp 2.176716 x10 –8 kg
12. Atomic mass constant mµ 1.6605387313 x10 –27 kg
Atomic mass constant
13. mµc 2 1.4924177812 x10 –10 J
energy equivalent
14. Faraday constant IF 96485.341539 C mol –1
15. Elementary charge e 1.60217646263 x10 –19 C
Electron volt–joule
16. eV 1.60217646263 x10 –19 J
relationship
17. Elementary charge over h e/h 2.41798949195 x10 14 AJ –1
18. Molar gas constant R 8.31447215 J mol –1 K –1
19. Boltzmann constant k 1.380650324 x10 –23 J K –1
20. Molar planck constant NAh 3.99031268930x10–10Js mol–1
21. Sackur–Tetrode constant S0 /R ȉ1.164867844
Wien displacement law
22. b 2.897768651 x10 –3 m K
constant
Lattice parameter of
23. a 543.10208816 x10 –12 m
silicon
24. Stefan–Boltzmann constant σ 5.67040040 x10 –8 W m –2 K –4
Standard acceleration of
25. g 9.80665 m s –2
gravity
Atomic mass
26. µ 1.6605387313 x10 –27 kg
unit–kilogram relationship
27. First radiation constant c1 3.7417710729 x10 –16 Wm 2
First radiation constant for
28. c1L 1.19104272293x10–16Wm2sr–1
spectral radiance
29. Second radiation constant c2 1.438775225 x10 –2 m K
30. Molar volume of ideal gas Vm 22.41399639 x10 –3 m 3 mol –1
31. Rydberg constant R∞ 10973731.5685 m –1
32. Rydberg constant in Hz R∞ c 3.28984196037 x10 15 Hz
33. Rydberg constant in joules R∞hc 2.1798719017 x10 –18 J
34. Hartree energy Eh 4.3597438134 x10 –18 J
35. Quantum of circulation h/me 7.27389503253 x10 –4 m2 s –1
36. Fine structure constant α 7.29735253327 x10 –3
37. Loschmidt constant n0 2.686777547 x10 25 m –3
38. Bohr radius a0 0.52917720832 x10 –10 m
39. Magnetic flux quantum Φʳ0 2.06783363681 x10 –15 Wb
40. Conductance quantum G0 7.74809169628 x10 –5 S
Inverse of conductance
41. G 0–1 12906.4037865 ͈
quantum

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 42. Josephson constant KJ 483597.89819 x10 9 Hz V –1
43. Von Klitzing constant RK 25812.8075730 ͈
44. Bohr magneton µB 927.40089937 x10 –26 J T –1
45. Bohr magneton in Hz/T µB/h 13.9962462456 x10 9 Hz T –1
46. Bohr magneton in K/T µB/k 0.671713112 K T –1
47. Nuclear magneton µN 5.0507831720 x10 –27 J T –1
48. Nuclear magneton in MHz/T µN/h 7.6225939631 MHz T –1
49. Nuclear magneton in K/T µN/k 3.658263864 x10 –4 K T –1
50. Classical electron radius re 2.81794028531 x10 –15 m
51. Electron mass me 9.1093818872 x10 –31 kg
Electron mass energy mec2
52. 8.1871041464 x10 –14 J
equivalent
53. Electron–muon mass ratio me/mµ 4.8363321015 x10 –3
54. Electron–tau mass ratio me/mτ 2.8755547 x10 –4
Electron–proton mass
55. me/mp 5.44617023212 x10 –4
ratio
Electron–neutron mass
56. me/mn 5.43867346212 x10 –4
ratio
Electron–deuteron mass
57. me/md 2.72443711706x10 –4
ratio
Electron charge to mass ȉe/me ȉ1.75882017471 x1011 Ckg –1
58.
quotient
59. Compton wavelength λc 2.42631021518 x10 –12 m
Compton wavelength
60. Ȝc 386.159264228 x10 –15 m
over 2 pi
61. Thomson cross section σe 0.66524585415 x10 –28 m2
Electron magnetic ȉ928.47636237x10 –26 J T –1
62. µe
moment
Electron magnetic
63. moment to Bohr µe/µB ȉ1.00115965219
magneton ratio
Electron magnetic
64. moment to nuclear µe/µN ȉ1838.28196604
magneton ratio
Electron–muon magnetic
65. µe/µ µ 206.766972063
moment ratio
Electron–proton magnetic ȉ658.210687566
66. µe/µp
moment ratio
Electron–neutron
67. µe/µn 960.9205023
magnetic moment ratio
Electron–deuteron ȉ2143.92349823
68. µe/µd
magnetic moment ratio
Electron to shielded helion
69. µe/µ'h 864.05825510
magnetic moment ratio
Electron magnetic
70. ae 1.15965218694 x10 –3
moment anomaly
71. Electron g–factor ge ȉ2.00231930437
72. Electron gyromagnetic ratio γe 1.76085979471 x10 11 s –1 T –1

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 73. Muon mass mµ 1.8835310916 x10 –28 kg
Muon mass energy
74. mµc2 1.6928333214 x10 –11 J
equivalent
75. Muon–tau mass ratio mµ/mτ 5.9457297 x10 –2
76. Muon–proton mass ratio mµ/mp 0.11260951733
77. Muon–neutron mass ratio mµ/mn 0.11245450793
Muon magnetic moment
78. aµ 1.1659160264 x10 –3
anomaly
79. Muon g–factor gµ ȉ2.00233183201
Muon Compton
80. λc, µ 11.7344419735 x10 –15 m
wavelength
Muon Compton
81. Ȝ c, µ 1.86759444455 x10 –15 m
wavelength over 2 pi
82. Muon magnetic moment µµ ȉ4.4904481322x10 –26 J T –1
Muon magnetic moment µ µ /µB ȉ4.8419708515 x10 –3
83.
to Bohr magneton ratio
Muon magnetic moment to µ µ /µN ȉ8.8905977027
84.
nuclear magneton ratio
Muon–proton magnetic µ µ /µp ȉ3.1833453910
85.
moment ratio
86. Tau Compton wavelength λc,τ 0.6977011 x10 –15 m
Tau Compton wavelength
87. Ȝ c,τ 0.11104218 x10 –15 m
over 2 pi
88. Tau mass mτ 3.1678852 x10 –27 kg
Tau mass energy mτc 2
89. 2.8471546 x10 –10 J
equivalent
90. Tau–proton mass ratio mτ/mp 1.8939631
Proton Compton
91. λc,p 1.32140984710 x10 –15 m
wavelength
Proton Compton
92. Ȝ c,p 0.21030890892 x10 –15 m
wavelength over 2 pi
93. Proton mass mp 1.6726215813 x10 –27 kg
Proton mass energy mpc 2
94. 1.5032773112 x10 –10 J
equivalent
Proton–neutron mass mp/mn
95. 0.99862347856
ratio
Proton charge to mass
96. e/mp 9.5788340838 x10 7 C kg –1
quotient
97. Proton magnetic moment µp 1.41060663358 x10 –26 J T –1
Shielded proton magnetic
98. µ'p 1.41057039959 x10 –26 J T –1
moment
Proton magnetic moment
99. µp/µN 2.79284733729
to nuclear magneton ratio
Proton–neutron magnetic ȉ1.4598980534
100. µp/µn
moment ratio
Shielded proton magnetic
101. moment to Bohr µ'p/µB 1.52099313216 x10 –3
magneton ratio

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 102. Proton gyromagnetic ratio γp 2.6752221211 x10 8 s –1 T –1
Shielded proton
103. γ' p 2.6751534111 x10 8 s –1 T –1
gyromagnetic ratio
Proton magnetic shielding
104. σ'p 25.68715 x10 –6
correction
105. Proton g–factor gp 5.58569467557
Neutron Compton
106. λc,n 1.31959089810 x10 –15 m
wavelength
Neutron Compton
107. Ȝ c,n 0.21001941422 x10 –15 m
wavelength over 2 pi
108. Neutron mass mn 1.6749271613 x10 –27 kg
Neutron mass energy mnc 2
109. 1.5053494612 x10 –10 J
equivalent
Neutron magnetic ȉ0.9662364023x10 –26 J T –1
110. µn
moment
Neutron magnetic
111. moment to Bohr µn/µB –1.0418756325 x10 –3
magneton ratio
112. Neutron g–factor gn ȉ3.8260854590
Neutron gyromagnetic
113. γn 1.8324718844 x10 8 s –1 T –1
ratio
114. Deuteron mass md 3.3435830926 x10 –27 kg
Deuteron mass energy mdc 2
115. 3.0050626224 x10 –10 J
equivalent
116. Deuteron molar mass M(d) 2.01355321271x10–3 kg mol –1
Deuteron–electron mass md/me
117. 3670.48295508
ratio
Deuteron–proton mass md/mp
118. 1.99900750083
ratio
Deuteron magnetic
119. µd 0.43307345718 x10 –26 J T –1
moment
Deuteron magnetic
120. moment to Bohr µd/µB 0.46697545565 x10 –3
magneton ratio
Deuteron magnetic
121. moment to nuclear µd/µN 0.85743822849
magneton ratio
Deuteron–proton
122. µd/µp 0.30701220835
magnetic moment ratio
123. Helion mass mh 5.0064117439 x10 –27 kg
Helion mass energy mhc 2
124. 4.4995384835 x10 –10 J
equivalent
125. Helion molar mass M(h) 3.01493223470x10 –3kg mol–1
Helion–electron mass mh/me
126. 5495.88523812
ratio
127. Helion–proton mass ratio mh/mp 2.99315265851
Shielded helion magnetic ȉ1.07455296745 x10 –26 J T–1
128. µ'h
moment

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 Shielded helion magnetic
129. moment to Bohr µ'h/µB ȉ1.15867147414 x10 –3
magneton ratio
Shielded helion magnetic
130. moment to nuclear µ'h/µN ȉ2.12749771825
magneton ratio
Shielded helion
131. γ' h 2.03789476485 x10 8 s –1 T –1
gyromagnetic ratio
132. Alpha particle mass mα 6.6446559852 x10 –27 kg
Alpha particle mass mαc 2
133. 5.9719189747 x10 –10 J
energy equivalent
134. Alpha particle molar mass M(α) 4.00150617471 x10–3 kg mol–1
Alpha particle to electron m /m
135. α e 7294.29950816
mass ratio
Alpha particle to proton mα/mp
136. 3.97259968461
mass ratio
To insert a constant at the cursor position :
1. Press [ CONST ] to display the physics constants menu.
2. Press [ ] or [ 2nd ] [ ] until the constant you want is
underlined.
3. Press [ ].
You also can use the [ CONST ] key in combination with a number, 1
through 136, to recall a physical constants. For example, press 15
[ CONST ].
DEG
e
–19
1.6 0 2 1 7 6 4 6 2 6 3

¾3 x NA = 1.80664259841 x 10 24
CONST DEG
3 [ x ] [ CONST ] [ CONST ] [ ]
[ ] h h NA l p t p 23
6. 0 2 2 1 4 1 9 9 4 7

[ ] CONST DEG
–1
008 : mo l 23
6. 0 2 2 1 4 1 9 9 4 7

[ ][ ] CONST DEG

3 ¼N A = 24
1 .8 0 6 6 4 2 5 9 8 4 1

Base–n calculations
Use MAIN ( [ MODE ] 1 ( MAIN ) ) mode for Base–n calculations.

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 The unit enables you to calculate in number base other than decimal.
The calculator can add, subtract, multiply, and divide binary, octal, and
hexadecimal numbers.
The following shows the numerals that can be used in each number
base.
Binary base ( b ) : 0, 1
Octal base ( o ) : 0, 1, 2, 3, 4, 5, 6, 7
Decimal base : 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
Hexadecimal base ( h ) : 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F
To distinguish the A, B, C, D, E and F used in the hexadecimal base
from standard letters, they appear as shown in the below.
Display Display Display Display
Key Key
(Upper) (Lower) (Upper) (Lower)
A /A D ID
B IB E IE
C IC F IF

Select the number base you want to use with [ BIN ], [ OCT ],
[ DEC ], [ HEX ]. The " BIN ", " b ", " OCT ", " o ", " HEX ", " h "
indicators show you which number base you are using. If none of the
indictors appears in the display, you are in decimal base.
Bases conversions
¾37 (base 8) = 31 (base 10) = 1F (base 16)
[ 2nd ] [ OCT ] 37 DEG OCT

o
00 0 0 0 0 0 0 0 3 7

[ 2nd ] [ DEC ] DEG

3 1.

[ 2nd ] [ HEX ] DEG HEX

h
0 0 0 0 0 0 1F

Block Function
For a result in binary base, it will be displayed using block function.
The maximum of 32 digits are displayed in 4 blocks of 8 digits.

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 Indicates Block 4 presently displayed
Indicates Block 3 presently displayed
Indicates Block 2 presently displayed
Indicates Block 1 presently displayed
DEG BIN

… … … … 110 10 011 b
…………

Indicates total blocks : 1 block

Indicates total blocks : 2 blocks
Indicates total blocks : 3 blocks
Indicates total blocks : 4 blocks

The block function comprises upper and lower block indicators. The
upper indicator means current block position, and the lower indicator
means total blocks for a result.
In the binary base, the block 1 is displayed immediately after
calculation. Other blocks ( block 2 ~ block 4 ) are displayed by
pressing [ ].
For example, input 47577557 16
Press [ 2nd ] [ HEX ] 47577557
Indicates Block 1 presently displayed
DEG BIN
[ 2nd ] [ BIN ]
…––
… 01010111 b

Indicates Block 2 presently displayed

DEG BIN
[ ]
…–
…– 01110101 b

Indicates Block 3 presently displayed

DEG BIN
[ ]
…
…–– 01010111 b

Indicates Block 4 presently displayed

DEG BIN
[ ]
… b
… – – –01000111

47577557 16 = Block 4 + Block 3 + Block 2 + Block 1

= 01000111010101110111010101010111 2

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 Basic arithmetic operations for bases
¾1IEIF 16 + 1234 10 1001 2 = 1170 8
[ 2nd ] [ HEX ] 1E F [ + ] [ 2nd ] DEG OCT

[ DEC ] 1234 [ ] [ 2nd ] [ BIN ] h 1 IE IF + 1 2 3 4 b 1

o
1001 [ ] [ 2nd ] [ OCT ] 0 00 0 0 0 0 1 1 7 0

Negative expressions
In binary, octal, and hexadecimal bases, the calculator represents
negative numbers using complement notation. The complement is the
result of subtracting that number from 10000000000 in that number's
base by pressing [ NEG ] key in non-decimal bases.
¾3/A 16 = NEG IFIFIFIFIFIFIC6 16
[ 2nd ] [ HEX ] 3 A [ NEG ] DEG HEX
NEG h 3 /A
h
F F FFFFC6

Logical operation
Logical operations are performed through logical products (AND),
negative logical (NAND), logical sums (OR), exclusive logical sums
(XOR), negation (NOT), and negation of exclusive logical sums
(XNOR).
¾1010 2 AND ( /A 16 OR 7 16 ) = 12 8
[ 2nd ] [ BIN ] 1010 [ AND ] [ ( ] [ 2nd ] DEG BIN

[ HEX ] A [ OR ] 7 [ ) ] [ ] [ 2nd ] b 1 0 1 0 AND ( h

o
[ OCT ] 00 0 0 0 0 0 0 0 1 2

Statistical Calculations
Use STAT ( [ MODE ] 2 ( STAT ) ) mode for statistical calculations.
The calculators can perform both single–variable statistical
calculations and paired–variable in this mode.
Press [ MODE ] 2 ( STAT ) to enter STAT mode. There are six items in
STAT mode, asking you to select one of them,

DEG STAT DEG STAT

1–VAR LIN LOG [ ][ ][ ] EXP PWR D–CL

Single–variable statistics
1–VAR Single–variable statistics
Paired-variable / Regression statistics

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 LIN Linear Regression y=a+bx
LOG Logarithmic Regression y = a + b lnx
bx
EXP Exponential Regression y=a•e
b
POW Power Regression y=a•x

D–CL Clear all statistical data

Entering data
Always make sure you clear statistical data by D–CL before performing
statistical calculations.
(A) To input single–variable data using the following syntaxes :
# Individual data : [ DATA ] < x value >
# Multiple data of the same value :
[ DATA ] < x value > [ x ] < Number of repeats >
(B) To input paired–variable / regression data using the following
syntaxes :
# Individual data-set : [ DATA ] < x value > [ ] < y value >
# Multiple data of the same value :
[ DATA ] < x value > [ ] < y value > [ x ] < Number of repeats >
(Note) : Even you exit STAT mode, all data are still retained unless you
clear all data by selecting D-CL mode.
Displaying results
The values of the statistical variables depend on the data you input.
You can recall them by the key operations shown in the below table.
Single–variable statistics calculations

Variables Meaning

n([n]) Number of the x values entered

x ( [2nd]+[ x ] ) Mean of the x values

Sx ( [2nd]+[ Sx ] ) Sample standard deviation of x values

σx ( [2nd]+[ σx ] ) Population standard deviation of x values

¦x ( [2nd]+[ ¦x ] ) Sum of all x values

2 2
¦x ( [2nd]+[ ¦x 2 ]) Sum of all x values

CP ( [2nd]+[ CP ] ) Potential capability precision of the x values

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 Minimum (CPU, CPL) of the x values, where
CPU is upper spec. limit of capability
CPK ( [CPK] ) precision and CPL is lower spec. limit of
capability precision
CPK = Min ( CPU , CPL ) = CP ( 1 – Ca )

Paired-variable statistics / Regression calculations

Variables Meaning
n([n]) Number of x-y pairs entered

x ( [2nd]+[ x ] )
Mean of the x values or y values
y ( [2nd]+[ y ] )

Sx ( [2nd]+[ Sx ] ) Sample standard deviation of x values or y

Sy ( [2nd]+[ Sy ] ) values

σx ( [2nd]+[ σx ] ) Population standard deviation of x values or

σy ( [2nd]+[ σy ] ) y values

¦x ( [2nd]+[ ¦x ] )
Sum of all x values or y values
¦y ( [2nd]+[ ¦y ] )
2
¦x ( [2nd]+[ ¦x 2 ]) 2 2
2
Sum of all x values or y values
¦y ( [2nd]+[ ¦y 2 ])

¦x y Sum of ( x • y ) for all x-y pairs

CP ( [2nd]+[ CP ] ) Potential capability precision of the x values
Minimum (CPU, CPL) of the x values, where
CPU is upper spec. limit of capability
CPK ( [ CPK ] ) precision and CPL is lower spec. limit of
capability precision
CPK = Min ( CPU , CPL ) = CP ( 1 – Ca )
a ( [2nd]+[ a ]) Regression formula constant term a
b ( [2nd]+[ b ]) Regression formula regression coefficient b
r ( [2nd]+[ r ]) Correlation coefficient r
x ’ ([ x ’ ] ) Estimated value of x
y ’ ([ y ’ ] ) Estimated value of y

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 You also can add a new data anytime. The unit automatically
recalculates statistics each time you press [ DATA ] and enter a new
data value.
¾Enter data : USL = 95, LSL = 70, DATA 1 = 75, DATA 2 = 85, DATA
3 = 90, DATA 4 = 82, DATA 5 = 77, then find out n = 5, = 81.8,
Sx = 6.05805249234, ıx = 5.41848687366, CP = 0.76897236513,
and CPK = 0.72590991268
DEG STAT
[ MODE ] 2
1–V A R L I N L OG

DEG STAT
[ ] [ DATA ] 75 [ DATA ] 85
[ DATA ] 90 [ DATA ] 82 [ DATA ] 77 DATA 5
7 7

[n] DEG STAT

n
5.
[ 2nd ] [ x ] DEG STAT

x
8 1.8
[ 2nd ] [ Sx ] DEG STAT

S X
6.0 5 8 0 5 2 4 9 2 3 4

[ 2nd ] [ ıx ] DEG STAT

ı x
5.4 1 8 4 8 6 8 7 3 6 6
DEG STAT
[ 2nd ] [ CP ] 95
USL= CP
9 5 USL

[ ] 70 DEG STAT

L SL= CP
7 0 LSL

[ ] DEG STAT

CP
0.7 6 8 9 7 2 3 6 5 1 3
[ CPK ] DEG STAT

USL= CPK
9 5 . USL
[ ] DEG STAT

L SL= CPK
7 0 . LSL

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 [ ] DEG STAT

CPK
0.7 2 5 9 0 9 9 1 2 6 8

¾Find a, b and r for the following data using linear regression and
estimate x = ? for y =573 and y = ? for x = 19.

Data item 15 17 21 28
FREQ. 451 475 525 678

[ MODE ] 2 [ ] DEG STAT

1–V A R L I N L OG

[ ] [ DATA ] 15 [ ] 451 [ DATA ] DEG STAT

17 [ ] 475 [ DATA ] 21 [ ] 525 REG
DA T A 4 = 2 8 ,
[ DATA ] 28 [ ] 678
6 7 8

[ 2nd ] [ a ] DEG STAT

REG
a
1 7 6.1 0 6 3 2 9 1 1 4

[ 2nd ] [ b ] DEG STAT

REG
b
1 7.5 8 7 3 4 1 7 7 2 2

[ 2nd ] [ r ] DEG STAT

REG
r
0 .98 9 8 4 5 1 6 4 1 3

573 [ x ’ ] DEG STAT

REG
x ’ 5 7 3
2 2.5 6 7 0 0 7 3 4 1 3
19 [ y ’ ] DEG STAT
REG
y ’ 1 9
5 1 0.2 6 5 8 2 2 7 8 5

Deleting data
The method to delete data depends on whether you have already
stored the data by next pressing [ DATA ] key or not.
To delete data you just input but have not yet stored it by next pressing
[ DATA ] , simple press [ CE ].
To delete data that you have already stored by next pressing [ DATA ] ,
(A) To delete single–variable data using the following syntaxes :
# < x value > [ 2nd ] [ DEL ]

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 # < x value > [ x ] < Number of repeats > [ 2nd ] [ DEL ]
(B) To delete paired–variable / regression data using the following
syntaxes:
# Individual data-set : < x value > [ ] < y value > [ 2nd ] [ DEL ]
# Multiple data-set with the same value :
< x value > [ ] < y value > [ x ] < Number of repeats > [ 2nd ]
[ DEL ]
If you enter and delete a value that isn't included in the stored data by
mistake, " dEL Error " appears, but the previous data are still retained.
Editing data
Press [ 2nd ] [ EDIT ] to enter EDIT mode. The EDIT mode is
convenient and friendly for you to view, correct, delete data.
(A) In 1–VAR mode, the method to view data depends on whether you
want to view data item or not.
# Each time you press [ DATA ], first data item appears 1 second
and then the corresponding value.
DEG STAT DEG STAT
EDIT EDIT
[ DATA ] 1 second
dAtA 1 15.

# Each time you press [ ], value appears directly on the

display without data item.
DEG STAT
EDIT
[ ]
15.

(B) In REG mode, each time you press [ DATA ], data item and x value
appear on the screen at the same time. You can press [ ] to
switch between x and y value.
DEG STAT DEG STAT

[ DATA ] DATA 1 = 15 , 45 EDIT [ ] DATA 1 = 15 , 45 EDIT

15 451

If you want to correct data, find out and enter a new entry to replace it.
FULL message
A “ FULL” is indicated when any of the following conditions occur and
further data entry becomes impossible. Just pressing any key can
clear the indicator. The previous data entries are still retained unless
you exit STAT mode.
1) If the times of data entry by [ DATA ] is more than 50
2) The number of repeats is more than 255

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 3) n!12750 (n = 12750 appears when the times of data entry by
[ DATA ] are up to 50 and the number of repeats for each value
are all 255, i.e. 12750 = 50 x 255 )

Complex Calculations
Use CPLX ( [ MODE ] 3 ( CPLX ) ) mode for complex calculations.
Complex mode enables you to add, subtract, multiply, and divide
complex numbers.
The results of a complex operation are displayed as follow :
Re Real value Im Imaginary value
ab Absolute value ar Argument value
¾( 7 – 9 i ) + ( 15 + 12 i ) = 22 + 3 i , ab = 22.2036033112, ar =
7.76516601843
[ MODE ] 3 CPLX DEG

0.
CPLX DEG
7 [ – ] 9 [ i ] [ + ] 15 [ + ] 12 [ i ] [ ]
Re I m a b a r
2 2.
[ ] CPLX DEG

Re I m a b a r
3 .i
[ ] CPLX DEG

Re I m a b a r
2 2.2 0 3 6 0 3 3 1 1 2
[ ] CPLX DEG

Re I m a b a r
7.7 6 5 1 6 6 0 1 8 4 3

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