Datexx DS-834 User Manual

Contents

General guide .................................................. E - 2

Power supply ......................................................................... E - 2

The keyboard ......................................................................... E - 2

Display symbols .................................................................... E - 3

Display formats ..................................................................... E - 3

Order of operations................................................................ E - 4

Correction .............................................................................. E - 5

Accuracy and Capacity.......................................................... E - 5

Overflow / Error conditions.................................................... E - 7

Basic calculation ............................................. E - 8

Mixed arithmetic calculation ................................................. E - 8

Parentheses calculations ...................................................... E - 8

Constant calculation .............................................................. E - 8

Percentage calculation .......................................................... E - 9

Memory calculation ............................................................... E - 9

Scientific calculation..................................... E - 10

Reciprocal, Factorial ........................................................... E - 10

Square, Square / Cubic Root, Power, Root ........................ E - 10

Logarithms and Antilogarithms ........................................... E - 10

Fraction calculation ............................................................. E - 10

Angular units conversion..................................................... E - 11

Trigonometric / Inverse trigonometric functions ................. E - 11

Hyperbolic / Inverse hyperbolic functions ........................... E - 12

Rectangular / Polar coordinates.......................................... E - 12

Permutations, Combinations .............................................. E - 12

Sexagesimal ↔ Decimal conversion.................................. E - 13

Base-n mode calculation .................................................... E - 13

Complex numbers calculation ............................................ E - 14

Random numbers and Exchange key................................. E - 14

Unit conversion.................................................................... E - 15

Statistics calculation..................................... E - 15

Computing single variable statistics ................................... E - 15

Viewing statistics data ........................................................ E - 16

Adding a data entry ............................................................. E - 17

Editing statistics data .......................................................... E - 17

Delete error .......................................................................... E - 18

Weighted data entry method ............................................... E - 18

E - 1

General guide

Power supply

On or Off :

To turn the calculator on, press [ ON/C ]; to turn the calculator off,

press [ 2ndF ] [ OFF ].

Auto power-off function :

This calculator automatically turns off it when not operated for
approximately 15 minutes. Power can be restored by pressing the
[ ON/C ] key again. Memory contents and the previous mode setting
(STAT, DEG, CPLX, Base-n,…) are retained even when power is
turned off or auto power-off.

Battery replacement :

The calculator uses two alkaline button batteries GP76A(LR44)
for power. If the display becomes dim and difficult to read, the
batteries should be replaced as soon as possible.

To replace batteries:

1) Remove the screws that hold the back cover.

2) Remove the back cover.

3) Replace the old batteries and install new ones with polarity in
correct directions.

4) Secure the screws in place, then press [ ON/C ] to turn the
power on.

The keyboard

Many of the calculator’s keys are used to perform more than one
function. The functions marked on the keyboard are printed
differently to help you find the one you need quickly and easily.

–1

2nd functions

1st functions

1st functions

Those are the functions that are normally executed when you
press the key.

2nd functions

The second function is printed above or to the right of the key. To
execute 2nd functions key, please press [ 2ndF ] then the
corresponding key. When you press [ 2ndF ], the “ 2ndF ” indicator

sin

sin

E - 2

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 [ 2ndF ] by
mistake, simply press [ 2ndF ] again to remove the “ 2ndF ”
indicator.

(Note) : [ A ], [ B ], [ C ], [ D ], [ E ], [ F ] are 1st functions in HEX

mode.

Display symbols

Indicators shown on the display to indicate you the current status
of the calculator.

DEG or RAD or GRAD : angular unit

M : Independent memory CPLX : Complex number mode

E : Overflow / Error STAT : Statistical mode

– : minus 2ndF : [2ndF] key pressed

( ) : Parenthesis calculation CP : Precision capability

BIN : Binary mode CPK : Process capability

OCT : Octal mode σ: Deviation

HEX : Hexadecimal mode USL : Setting upper limit

ED : Edit mode LSL : Setting lower limit

HYP : Hyperbolic mode

Display format

The calculator can display numbers in four formats : floating
point, fixed point, scientific, and engineering.

Floating point display format

The floating point format displays numbers in decimal form,
using up to 10 digits. Any trailing zeros are truncated.

If the result of a calculation is too large to be represented in 10
digits, the display automatically switches to scientific format. If the
result of later calculations is small enough to be displayed in 10
digits, the calculator returns to floating point format.

(Ex.) : Set the display in floating display format.

Step : Press [ 2ndF ] [ TAB ] [ • ]

Fixed point display format

The fixed point, scientific, and engineering formats use a fixed
number of decimal places to display numbers. If more than the
selected number of decimal places is keyed, it will be rounded to
the correct number of decimal places.

E - 3

DEG

0.

(Ex.) : Fix the display at 2 decimal places, then key in 3.256

Step 1 : press [ 2ndF ] [ TAB ] 2
Step 2 : key in 3.256 [ = ]

On the contrary, if fewer than the selected number of decimal
places is keyed, it will be padded with trailing zero.

DEG
DEG

0.00

3.26

(Ex.) : Fix the display at 4 decimal places, then key in 4.23

Step 1 : press [ 2ndF ] [ TAB ] 4
Step 2 : key in 4.23 [ = ]

DEG
DEG

0.0000

4.2300

Scientific display format

In Scientific display format, the number 891500 can be shown in
scientific format as 8.915 x 10 05, where 8.915 is called the
mantissa and 5 is as the exponent of 10.

(Ex.) : 7132 x 125 is displayed in scientific display format.

Step 1 : key in 7132 [ x ] 125 [ = ]
Step 2 : press [ F↔E ]

DEG
DEG

891500.

8.915

(in floating point format)
Besides, entry can be made in scientific notation by using the
[EXP] key after entering the mantissa.

(Ex.) : Key the number 4.82296 x 10

Step : key in 4.82296 [ EXP ] 5

5

DEG

4.82296

(in floating point format)

Engineering display format

The format is similar to the scientific format, expect the mantissa
can have up to three digits left of the decimal, instead of only one,
and the exponent is always a multiple of three. It is useful for
engineers to convert units based on multiples of 10 3.

(Ex.) : Convert 15V into 15000mV (V : Volt)

Step 1 : key in 15

Step 2 : press [ ENG ] twice

DEG
DEG

15.

15000.

(Ex.) : Convert 15V into 0. 015KV (V : Volt)

Step 1 : key in 15

Step 2 : press [ 2ndF ] [ ← ] twice

DEG
DEG

15.

0.015

Order of operations

Each calculation is performed in the following order of

precedence :

1) Operation in parenthesis

2) Functions required pressing the function key before entering,
E - 4

05

05

– 03

03

for example, [ DATA ] in STAT mode and [ EXP ] key .

3) Functions required inputing values before pressing the

function key, for example, cos, sin, tan, cos -1, sin -1, tan -1,
log, ln, X 2, 1/x, √, π, 3√, X!, %, RND, ENG,

。。

，，

，，→，，→

。

，

，，→

, and 6 units conversion.

。。

，，

，，→，，→

4) Fractions

5) +/–

y

6) X y,

√

X

7) nPr, nCr

8) x , ÷

9) +, –

→。→。

→。

→。→。

，，

，

，，

，，，，

，，

，，，，

,,

,

,,

Correction

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
using the backspace key [ 00 → 0 ]

(Ex.) : Correct 12385 as 789

Step : press [ CE ] 789

DEG

789.

(Ex.) : Correct 12385 as 123

Step : press [ 00 → 0 ] twice

In a series of calculations, you can correct errors in immediate
results by pressing [ ON/C ] to clear the calculation completely
(expect clearing memory, see page 9).

If you press the wrong arithmetic operation key, just press [ CE ]
key before entering anything else.

DEG

123.

Accuracy and Capacity

Accuracy :

± 1 in 10th digit.

Capacity :

In general, every reasonable calculation is displayed up to 10
digit mantissa, or 10-digit mantissa plus 2-digit exponent up to

± 99

10

or integers between – 9999999999 and 9999999999.

Numbers used as input must be within the range of the given
function. The range for each of the calculator’s functions is given in
the following pages.

Functions Input range

sin x, cos x, tan x Deg：│ X │＜ 4.5 x 10

10

deg

E - 5

Rad：│X │＜ 2.5 x 10 8πrad
Grad：│X │＜ 5 x 10
however, for tan x
Deg：│X │≠ 90 (2n+1)
Rad：│ X │≠ (2n+1)
Grad：│X │≠ 100 (2n+1)

π

2

(n is an integer)

sin -1 x, cos -1 x │X │≦ 1
tan -1 x │X │＜ 1 x 10
sinh x, cosh x │X │≦ 230.2585092
tanh x │X │＜ 1 x 10
sinh -1 x │X │＜ 5 x 10
cosh -1 x1≦X ＜ 5 x 10
tanh -1 x │x│＜ 1
log x, ln x 1 x 10

x

10

x

e

√

X 0≦X ＜ 1 x 10

2

x

-1 x 10

-1 x 10

│X │＜ 1 x 10

1 / X │X │＜ 1 x 10

3

√X

│X │＜ 1 x 10

100

100
99

99

- 99

≦X ＜ 1 x 10

100

＜X ＜ 100

100

＜X ≦ 230.2585092

100

50
100

, X≠ 0

100

X ! 0≦ X ≦69 , X is an integer.
R → P ＜ 1 x 10

√

X2 +Y

2

P → R0≦r ＜ 1 x 10

Deg：│θ│＜4.5 x 10
Rad：│θ│＜2.5 x 10 8πrad
Grad：│θ│＜ 5 x 10
however, for tan x

Deg：│θ│≠90 (2n+1)
Rad：│θ│≠ (2n+1)
Grad：│θ│≠100 (2n+1)

100

100

π

2

(n is an integer)

→。，，，

。， ，，→

y

X

│DD │, MM, SS.SS ＜ 1 x 10

0 ≦ MM, SS.SS
│x │＜ 1 x 10
X＞ 0 ： – 1 x 10

100

100

＜Y log X ＜ 100
X = 0 ：Y＞ 0
X＜ 0 ： Y = n, 1/(2n+1), n is an integer.

E - 6

10

grad

100

10

deg

10

grad

100

,

1

but -1 x 10

y

√X

X＞ 0 ： Y ≠ 0, –1 x 10
X = 0： Y ＞ 0

X＜ 0：Y = 2n+1, I/n, n is an integer.(n ≠0)
but – 1 x 10

b

a Input：Total of integer, numerator and

c

denominator must be within 10 digits
includes division marks)

100

＜ log│ X │＜100

Y

100

＜ ＜100

1

100

＜ log│ X │＜100

Y

1

Ylog x

Result：Result displayed as fraction for i
integer when integer, numerator and

denominator are less than 1 x 10

nPr, nCr 0≦ r ≦ n, n≦ 9999999999, n,r are integers.
STAT │ x│＜ 1x10 50, │Σx │＜ 1 x 10

0≦│Σ x2│＜1 x 10
：n≠ 0,S：n＞ 1,σ：n＞0

x

Range = 1 ~ r, 1≦ n ≦r, 80 ≦ r ≦ 20400

10

100

, n, r are integer

100

→ DEC 0≦ X ≦ 9999999999 (for zero or positive )

– 1≦ X ≦– 9999999999 (for negative)

→BIN 0 ≦ X ≦ 0111111111 (for zero, positive)

1000000000≦ X ≦1111111111
(for negative)

→OCT 0 ≦ X≦ 3777777777 (for zero or positive)

4000000000≦ X ≦7777777777
(for negative)

→ HEX 0≦X ≦ 2540BE3FF( for zero or positive)

FDABF41C01≦X ≦ FFFFFFFFFF
(for negative)

Overflow / Error conditions

A symbol “ E ” are indicated on the display when any of the
following conditions occur and further calculation becomes
impossible. Just press [ ON/C ] to release those overflow or error
indicator and the subsequent calculation can then be performed.

1) When function calculations are performed with a number
exceeding the input range.

2) When a number is divided by 0.

3) When the [ ( ] key is used more than 15 times in a single
expression.

4) When a result (whether intermediate or final) or accumulated
total in memory exceeds the limit. ( ± 9.999999999 x 10 99)

5) When more than six pending operations.
E - 7

Basic calculation

Before performing the following calculation, check to see that

your calculator is in decimal base and floating point display.

Mixed arithmetic calculation

1 + 2 x 3 = ? 1 [ + ] 2 [ x ] 3 [ = ]
– 3.5 + 8 ÷ 2 = ? 3.5 [ +/– ] [ + ] 8 [ ÷ ] 2 [ = ]

DEG
DEG

0.5

Parentheses calculations

Operation inside parentheses are always executed first. You can
use up to 15 levels of parentheses in a single calculation. When the
first parenthesis is opened, the “ ( ) ” indicator appears and remains
in the display until the last parenthesis is closed.

( 5 – 2 x 1.5 ) x 3 [ ( ] 5 [ – ] 2 [ x ] 1.5 [ ) ] [ x ]
+ 0.8 x ( – 4 ) = ? 3 [ + ] 0.8 [ x ] 4 [ +/– ] [ = ]
2 x { 7 + 6 x ( 5 + 4 ) } 2 [ x ] [ ( ] 7 [ + ] 6 [ x ]

DEG

DEG

2.8

122.
= ? [ ( ] 5 [ + ] 4 [ = ]
(Note) : It is unnecessary to press the [ ) ] key before the [ = ] key.

Constant calculation

The calculator enables you to repeat the last number entered or

the last operation executed by pressing [ = ] key.

Repeating the last number

3 x 3 = ? 3 [ x ] [ = ]
3 x 3 x 3 = ? [ = ]
3 x 3 x 3 x 3 = ? [ = ]

Repeating the arithmetic operation

321 + 357 = ? 321 [ + ] 357 [ = ]
654 + 357 = ? 654 [ = ]

DEG
DEG
DEG

DEG
DEG

27.

81.

678.

1011.

7.

9.

579 - 159 = ? 579 [ - ] 159 [ = ]
456 - 159 = ? 456 [ = ]

18 x 45 = ? 3 [ x ] 6 [ x ] 45 [ = ]
18 x 23 = ? 23 [ = ]
18 x (0.5 x 10 2) = ? 0.5 [ EXP ] 2 [ = ]

E - 8

DEG
DEG

DEG
DEG
DEG

420.

297.

810.

414.

900.

96 ÷ 8 = ? 96 [ ÷ ] 8 [ = ]
75 ÷ 8 = ? 75 [ = ]
(1.2 x 10 2) ÷ 8 = ? 1.2 [ EXP ] 2 [ = ]

DEG
DEG
DEG

Percentage calculation

30% of 120 = ? 120 [ x ] 30 [ 2ndF ] [ % ]

[ = ]
70% of 120 = ? 70 [ 2ndF ] [ % ] [ = ]
88 is 55% of 88 [ ÷ ] 55 [ 2ndF ] [ % ]
what number = ? [ = ]
30% add-on of 120 120 [ + ] 30 [ 2ndF ] [ % ]
= ? [ = ]
30% discount of 120 120 [ – ] 30 [ 2ndF ] [ % ]
= ? [ = ]

DEG

DEG
DEG

DEG

DEG

Memory calculation

You should keep the following rules in mind when performing

memory calculations.

1) The “ M ” indicator appears when a number is stored in the
memory.

2) Recalling from a memory by pressing [ MR ] key does not
affect its contents .

3) All memories are unavailable under STAT mode.

4) In order to exchange the content of the memory for the
displayed number, please press [ X→ M ] key.

5) The contents of the memories can be cleared by pressing
[ 0 ] [ X → M ] or [ CE ] [ X → M ] in sequence.

[ CE ] [ X → M ]
3 x 5 3 [ x ] 5 [ M+ ] M
+) 56 ÷ 7 56 [ ÷ ] 7 [ M+ ] M
+) 74 - 8 x 7 74 [ – ] 8 [ x ] 7 [ M+ ] M
Total = ? [ MR ] M

0 [ X → M ]

DEG
DEG
DEG
DEG
DEG
DEG

12.

9.375

15.

36.

84.

160.

156.

84.

0.

15.

8.

18.

41.

0.

E - 9

Scientific calculation

Before performing the following calculation, check to see that

your calculator is fixed at 2 decimal places display format.

Reciprocal, Factorial

1

= ? 1.25 [ 2ndF ] [1/X] [ = ]

1.25

5! = ? 5 [ 2ndF ] [ X! ] [ = ]

DEG
DEG

120.00

Square, Square / Cubic Root, Power, Root

2 2 + 3 4 = ? 2 [ X 2 ] [ + ] 3 [ X y ] 4 [ = ]
5 x 3 27 + 34 5 [ x ] 27 [ 2ndF ] [ 3√ ]

√ √

= ? [ + ] 34 [ √ ] [ = ]

9

72 = ? 72 [ 2ndF ] [ y ] 9 [ = ]

√

√X

DEG
DEG

DEG

Logarithms and Antilogarithms

ln7 + log100 = ? 7 [ ln ] [ + ] 100 [ log ] [ = ]
10 2 = ? 2 [ 2ndF ] [ 10 x ] [ = ]

– 2

e 5 - e

= ? 5 [ 2ndF ] [ e x ] [ – ]

2 [ +/– ] [ 2ndF ] [ e x ] [ = ]

DEG
DEG
DEG

100.00

148.28

Fractional calculation

Fraction value display is as follow :

5

12 Display of

┘┘

┘

┘┘

56

5

12 Display of 56

∪∪

∪

∪∪

┘┘

┘

┘┘

(Note) : Total of integer, numerator and denominator must be

within 10 digits, or the fractional value couldn’t be shown
completely.

By pressing [ 2ndF ] [ d/e ], the displayed value will be converted

to the improper fraction.

performed with a decimal, the answer is displayed as a decimal.

3

2

+ 7 2 [a ] 3 [ + ]

5

3

4

= 8 7 [a ] 3 [a ] 5 [ = ]

15

124

= [ 2ndF ] [ ]

15

When a press of [a b/c] key after the [ = ] key or a fraction

3

5 + 3 5 [a ] 4 [a ] 9 [ + ]

944

7

= 9 [+] 3 [a ] 3 [a ] 4 [ = ]

36

b
c

b
c

b
c

b
c

E - 10

5

12

5

12

DEG

8

4

∪∪

∪

DEG

DEG

∪∪

124

9

∪∪

∪

∪∪

b
c

d
e

b
c

b
c

0.80

85.00

20.83

1.61

3.95

┘┘

┘

┘┘

┘┘

┘

┘┘

7

┘┘

┘

┘┘

15

15

36

= 9.19 [ a ]

4

8 + 3.75 8 [a ] 4 [a ] 9 [ + ]

9

b
c

b

b

c

c

DEG

DEG

9.19

12.19

= 12.19 [ + ] 3.75 [ = ]

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.

119

3 = 8 3 [a ] 119 [a ] 21

If total of integer, numerator and denominator exceeds 10 digits
(including division marks), the result answer will be displayed as a
decimal.

12345 + 5 12345 [a ] 5 [a ] 16
= 12350.77 [+] 5 [a ] 6 [a ] 13 [=]

21

2
3

16513

b
c

[ = ]

6

b
c

b
c

b

b

c

c

DEG

8

2

∪∪

∪

∪∪

b

DEG

c

12350.77

Angular units conversion

The calculator enables you to convert a angular unit among
degrees(DEG), radians(RAD), and grad(GRAD).

The relation among the three angle units is :

180 ° = π rad = 200 grad

1) To change the default setting to another setting, press [ DRG ]
key repeatedly until the angular unit you want is indicated in
the display.

2) After entering an angle, press [ 2ndF ] [ DRG→] repeatedly
until the converted value is displayed.

90 °(deg) 90
= ? (rad) [ 2ndF ] [ DRG→]
= ? (grad) [ 2ndF ] [ DRG →]

DEG
RAD

GRAD

1.57

100.00

Trigonometric / Inverse trigonometric functions

When using those key, make sure the calculator is set for the

angular unit you want.

3 sin 85 ° = ? 3 [ x ] 85 [ sin ] [ = ]

π

cos ( rad) = ? [ 2ndF ] [ π] [ ÷ ] 4 [ = ]

4

[ cos ]

tan 150grad = ? 150 [ tan ]

-1

sin

0.5 = ? deg 0.5 [ 2ndF ] [ sin

- 1

DEG

2.99

RAD

0.71

GRAD

–1.00

DEG

]

30.00

3

┘┘

┘

┘┘

90

E - 11

-1

cos

( ) = ? rad

1

√

2

2 [ √ ] [ 2ndF ] [ 1/X ]
[ 2ndF ] [ cos

tan -1 1 = ? grad 1 [ 2ndF ] [ tan

- 1

]

- 1

]

RAD

GRAD

Hyperbolic / Inverse hyperbolic functions

cosh1.5+sinh1.5 = 1.5 [ HYP ] [ cos ] [ + ]

-1

sinh

7 = 7 [ HYP ] [ 2ndF ] [ sin

1.5 [ HYP ] [ sin ] [ = ]

tanh 1 = 1 [ HYP ] [ tan ]

DEG

-1 ]DEG
DEG

Rectangular / Polar coordinates

Rectangular Coordinates Polar Coordinates

Y

Y

0.79

50.00

4.48

2.64

0.76

y

• P( x, y )

0

x

X

• P( r, θ)

r

θ

0

X

a + b i= r (cos θ + i sin θ)

(Note) : When using those key, make sure the calculator is set for

the angular unit you want.

Converting from Rectangular to Polar

If a = 5 and b = 6 5 [ a ] 6 [ b ]
, what are r andθ? [ 2ndF ] [ R → P]

[ b ]

DEG

DEG

Converting from Polar to Rectangular

If r = 25 and θ= 56° 25 [ a ] 56 [ b ]
, what are a and b? [ 2ndF ] [ P→ R]

[ b ]

Permutations, Combinations

n !

nPr = nCr =

(n – r) !

n !

r ! (n – r) !

How many 7 [ 2ndF ] [ nPr ] 4 [ = ]
permutations of 4
items can you select
out of a set of
numbers of 7 items?

DEG

DEG

DEG

840.00

E - 12

7.81

50.19

13.98

20.73

How many 7 [ 2ndF ] [ nCr ] 4 [ = ]
combinations of 4
items can you select
out of a set of
numbers of 7 items?

Sexagesimal

The calculator enables you to converts the sexagesimal figure

(degree, minute and second) to decimal notation by pressing

。。

，，

，，→，，→

[

。

，

，，→

] and converts the decimal notation to the sexagesimal

。。

，，

，，→，，→

notation by [ 2ndF ] [

↔↔

↔ Decimal form conversion

↔↔

→。→。

，，

，，，，

→。

，

，，

] .

→。→。

，，

，，，，

DEG

35.00

Sexagesimal figure value display is as follow :

││

││││

│

││

││

││││

□□

□

□□

12

45

30

5 Represent 12 hours, 45 minutes, 30.27 seconds

(Note) : The total of DD, MM and SS.SS must be within 8 digits, or

the sexagesimal couldn’t be shown completely.

Converting from Sexagesimal to Decimal

12 hours, 45 minutes, 12 [

30.5 seconds = ? 30.5 [

。。

，，

。

，

。。

，，

，，→，，→

，，→

，，→，，→

。。

，，

，，→，，→

。

，

，，→

。。

，，

，，→，，→

] 45 [

]

。。

，，

。

，

。。

，，

，，→，，→

，，→

，，→，，→

DEG

]

12.76

Converting from Decimal to Sexagesimal

→。→。

，，

2.12345 = ? 2.12345 [ 2ndF ] [

，，，，

→。

，

，，

]2□7│24││ 42

→。→。

，，

，，，，

Base-n mode calculation

Converting between bases

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. Select the number base
you want by the [→ BIN], [→ OCT], [→ HEX], [→DEC] keys. The
BIN, OCT, and HEX indicators show you which base you are using.
(if none of the indicators appears in the appear in the display, you
are in decimal base.)

The keys active in each base is described as follows :
Binary base : [ 0 ] [ 1 ]
Octal base : [ 0 ] ~ [ 7 ]
Decimal base : [ 0 ] ~ [ 9 ]

Hexadecimal base : [ 0 ] ~ [ 9 ], [ A ] ~ [ F ]
31 (base 10) [ 2ndF ] [→DEC ] 31
= ? (base 2) [ 2ndF ] [ →BIN ]
= ? (base 8) [ 2ndF ] [ → OCT ]
= ? (base 16) [ 2ndF ] [ →HEX ]

E - 13

DEG
DEG BIN
DEG OCT
DEG HEX

11111.

31.

37.

1F.

4 X 1B (base 16) [ 2ndF ] [→HEX ]

DEG HEX

6C.

4 [ x ] 1B [ = ]
= ? (base 2) [ 2ndF ] [ → BIN ]
= ? (base 10) [ 2ndF ] [→DEC ]
= ? (base 8) [ 2ndF ] [ → OCT ]

DEG BIN
DEG
DEG OCT

1101100.

108.00

154.

Negative and Complements

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 [ +/– ] key in non-decimal bases.

Calculate the [ 2ndF ] [→ BIN ] 11011

DEG BIN

complement of binary [ +/– ] 1111100101.
number 11011

Complex numbers calculation

Select the complex numbers mode by pressing [ CPLX ] key and
make sure “ CPLX ” indicator appears on the display. The calculator
enables you to add, subtract, multiply, and divide complex numbers.

Complex numbers are generally represented as a + b i, where a
is a real and b is imaginary.

[ 2ndF ] [ CPLX ]

DEG CPLX

( 7– 9 i ) 7 [ a ] 9 [ +/– ] [ b ] 22.00
+ (15 + 10 i) = ? [ + ] 15 [ a ] 10 [ b ] [ = ]

[ b ]

DEG CPLX

1.00

(Note) : Memory calculation is available in complex number mode.

Random numbers and Exchange key

Random key

Pressing [ RND ] key enables the display to generate random
numbers between 0.000 and 0.999.

Step : press [ 2ndF ] [ RND ]

Exchange key

Pressing [ 2ndF ] [ X↔ Y ] enables the displayed value to
exchange as the previous value.

123 + 456 = ? 123 [ + ] 456 [ = ]

[ 2ndF ] [ X↔Y ]
[ 2ndF ] [ X↔Y ]

DEG

DEG
DEG
DEG

0.231

579.00

456.00

579.00

E - 14

Unit conversion

↔↔

In

↔cm

↔↔

12 ln = ? cm 12 [ A → B ] [ 2ndF ]

[ In↔cm ]

98 cm = ? ln 98 [ 2ndF ] [ A ← B ]

DEG

DEG

[ 2ndF ] [ In↔cm ]

(Note) : The operating procedure for unit conversion key,

[ ℉↔℃ ], [ mmHg↔Kpa ], [ gal↔l ], [ lb↔kg ], [ OZ↔g ],
is similar to the above example.

Statistics calculation

Computing single variable statistics

Select the mode by pressing [ STAT ] key and make sure “ STAT ”
indictor appears on the display.

The STAT mode enables you to calculate the following single
variable statistics :

n number of all data
Σ x sum of all data

Σ x2sum of the squares

mean value

x

s Sample Standard deviation
σ Population standard deviation
CP Precision capability

USL – LSL

CPK Process capability Min(CPU, CPL)

x

where CPU = CPL =

(Note) : In STAT mode, all function key are available, except base-

n calculation.

USL –

3 σ

(Ex. 1) : Enter the following data to calculate Σ x, Σ x 2, n, , S,
CP, and CPK , where data 1 = 2, data 2~5 = 5, data 6-8 = 9, USL
value : 12, LSL value : 2
In STAT mode [ 2ndF ] [ STAT ]
Enter all data [ DATA ] 2

[ DATA ] 5

E - 15

Σx

6 σ

DEG STAT
DEG STAT
DEG STAT

2

– (Σx)2 / n

n – 1

2

Σx

– (Σ x)2 / n

3 σ

n

– LSLx

x

0.00

2.

5.

30.48

38.58

[ DATA ] 5
[ DATA ] 5
[ DATA ] 5
[ DATA ] 9
[ DATA ] 9
[ DATA ] 9

[ = ]
= ? [ ]
n = ? [ n ]
S = ? [ S ]

Σx = ? [ 2ndF] [Σx ]
Σx 2 = ? [ 2ndF ] [Σ x 2]
σ= ? [ 2ndF ] [σ]

CP = ? [ 2ndF ] [ CP ] 12

[ = ] 2

[ = ]
CPK = ? [ 2ndF ] [ CPK ]

[ = ]

[ = ]

(Note) : The calculator keeps a record of all the entries you make

and these entries are retained even if auto power-off or
turning off, unless exiting STAT mode.

DEG STAT
DEG STAT
DEG STAT
DEG STAT
DEG STAT
DEG STAT
DEG STAT
DEG STAT
DEG STAT
DEG STAT
DEG STAT
DEG STAT
DEG STAT
DEG CP STAT
DEG CP STAT
DEG CP STAT
DEG STAT
DEG STAT
DEG STAT

5.

5.

5.

9.

9.

9.

0.00

6.13

8.00

2.59

49.00

347.00

2.42

12.

2.

0.69

12.00

2.00

0.57

Viewing statistics data

Pressing [ DATA ] or [ = ] key under ED mode can view the statistics
data you have entered. The difference between [ DATA ] and [ = ] is the
item of the data entry appears 1.5 sec. before the value by [ DATA ], the
value appears immediately without the item by [ = ].

(Ex.2) : View the statistics data based on Ex. 1.

Step 0 : Press [ 2ndF ] [ EDIT ] to enter ED mode.

(Method 1) :

Step 1 : Press [ DATA ] once to view the first data.

DEG ED STAT

Step 2 : Continue pressing [ DATA ] once for each data, it

will display data 2, 5.00, data 3, 5.00, data 4,

5.00, data 5, 5.00, data 6, 9.00, data 7, 9.00,
data 8, 9.00 in sequence.

1.5 sec.

dAtA 1 → 2.00

E - 16xxE - 17

DEG ED STAT

σ

USL
LSL

CPK
USL
CPK
LSL

CPK

(Method 2) :

Step 1 : Press [ = ] once to view the first data

Step 2 : Continue pressing [ = ] once for each data, it will

display 5.00, 5.00, 5.00, 5.00, 9.00, 9.00,

9.00 in sequence.

Adding a data entry

(Ex.3) : Add data 9 = 10 to Ex.1

Step 1 : Press [ DATA ] 10
Step 2 : The calculator updates the statistics as you enter

data. You can then recall all variable statistics to
get the following result : = 6.56, n = 9.00, S =

2.74, Σ x = 59.00, Σ x 2 = 447.00, σ = 2.59,
where data 1 = 2.00, data 2~5 = 5.00, data 6~8
= 9.00, data 9 = 10.00

x

Editing statistics data

(Ex.4) : Based on Ex.1, correct data 1 = 2 as data 1 = 3

Method 1 :

Press 2 [ 2ndF ] [ DEL ] 3 to overwrite.

Method 2 :

Step 1 : Press [ 2ndF ] [ EDIT ]
Step 2 : Find out 2 by [ DATA ] or [ = ]
Step 3 : Enter 3 to overwrite 2
Step 4 : Press [ = ] and [ 2ndF ] [ EDIT ] to exit ED mode,

where those data are changed as data 1 = 3.00,

(Ex.5) : Based on Ex.1, delete data 1 = 2 .

Method 1 :

Method 2 :

data 2~5 = 5.00, data 6~8 = 9.00.

Press 2 [ 2ndF ] [ DEL ] to delete 2.

Step 1 : Press [ 2ndF ] [ EDIT ]
Step 2 : Find out 2 by [ DATA ] or [ = ]
Step 3 : Press [ 2ndF ] [ DEL ]
Step 4 : Press [ 2ndF ] [ EDIT ] to exit ED mode, where

those data are changed as data 1~4 = 5.00, data
5~7 = 9.00.

DEG ED S TAT

DEG ED S TAT

DEG ED STAT
DEG ED STAT
DEG ED S TAT

DEG ED STAT
DEG ED STAT
DEG ED S TAT

2.00

10.

0.00

2.00

3.

0.00

2.00

5.00

Delete error

(Ex.7) : 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, for example, delete 7 based on Ex.1.

Step 1 : Press 7 [ 2ndF ] [ DEL ]

Step 2 : Press any key to clear it
Step 3 : Enter ED mode, then view data by [ DATA ] or

[ = ], where those data are still data 1 = 2.00,
data 2~5 = 5.00, data 6~8 = 9.00.

DEG S TAT

dEL Error

DEG STAT

0.00

(Ex.8) : Based on Ex.1, enter 5 x 5 and delete it.

Step 1 : Press 5 [ x ] 5 [ 2ndF ] [ DEL ]

Step 2 : Press any key to clear it
Step 3 : Enter ED mode, then view data by [ DATA ] or

[ = ], where those data are changed as data 1 =

2.00, data 2~4 = 9.00.

DEG S TAT

dEL Error

DEG STAT

0.00

Weighted data entry method

Instead of entering directly each data, when often several item of
data have the same value, you can enter the value and the number
of occurrences up to 255. The data based on Ex.1 can be rewritten
and entered as follow :

Value Number of occurrences Alternative method

2 1 [ DATA ] 2
5 4 [ DATA ] 5 [ x ] 4

9 3 [ DATA ] 9 [ x ] 3
, where data 1 = 2, data 2~5 = 5, data 6~8 = 9.
Under ED mode, when you continue choosing a value from data

2~5 and correcting it as 33, the permutation among those data will
be changed as data 1 = 2, data 2~4 = 5, data 5 = 33, data 6~8 = 9,
where the new value 33 is inserted after data 4 = 5.

(Note) : 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 exiting STAT mode.

1) If the times of data entry by [ DATA ] is more than 80

2) The number of occurrences is more than 255

3) n＞ 20400 (n = 20400 appears when the times of data
entry by [ DATA ] are up to 80 and the number of
occurrences for each value are all 255, i.e. 20400 = 80
x 255.)

E - 18