Citizen SR-135NPU: инструкция

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FEATURES ......................................................................... 2

THE KEYBOARD AND OPERATING CONTROLS ........... 2

DISPLAY........................................................................... 10

CALCULATION................................................................. 11

1. Calculation order of priority................................................ 11

2. Addition, subtraction, multiplication and division and 

constant calculations. ........................................................ 12

3. Memory calculation............................................................ 13

4. Calculations with parenthesis. ........................................... 14

5. Coordinate conversion:...................................................... 14

6. Complex Calculation.......................................................... 15

7. Statistical calculation. ........................................................ 16

SPECIFICATIONS ............................................................ 17

AUTOMATIC POWER OFF .............................................. 17

BATTERY REPLACEMENT ............................................. 17

Contents 

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FEATURES 

(1) 

Normal 

operations. 

Four operation (+, –, x,

÷

), x

y

,

y

x

, auto-constant, parenthesis, 

percentage. 

(2)  Memory calculation (X

→

M, MR, M+). 

(3)  General mathematical function: 

Trigonometric (3) 

Arctrigonometric (3) 

Logarithmic (2) 

Exponential (2) 

 Square 

Power 

Square Root 

Cube Root 

 Root 

π

 Parenthesis 

Reciprocal 

 EXP 

+/– 

 SCI 

Factorial 

DEG, RAD, GRAD 

Degree, minute, second conversion (2) 

 FIX 

X

↔

Y 

 RND 

Coordinate 

conversion. 

(4)  Binary, octal, decimal and hexadecimal mode. 

Mutual conversions and calculations of binary, octal, decimal, and 

hexadecimal numbers. 

(5)  Memory protection when power off. 

(6)  An automatic power off feature to preserve battery life. 

(7) Statistics calculations. 

• Number of sample (n). 

• Total of square of all data (

Σ

x

2

). 

• Average (

x

). 

• 2 kinds of the standard deviation (

σ

n–1

, 

σ

n

). 

• Total of all data (

Σ

x). 

(8)   2-variable function polar-rectangular coordinate conversion.   

THE KEYBOARD AND OPERATING  CONTROLS 

(1) 

[

]

ON/C

SD

  :  1. Power on and clear an error condition.   

2. Set and clear the statistics mode.         

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(2) 

[

]

CE

x!

  :  1. Clear entry key. 

  2. Factorial function (x!). 

  x! = n x (n–1) x (n–2) x (n–3) x .....x 2 x 1 

(3) 

[OFF]

 : Power off key. 

(4) 

[SHIFT]

 : This is the key for specifying the second function. When 

this key is pressed, the special display “SHIFT” lights.  

When this key press twice continuously, the second 

function mode releas.    

(5) 

[

]

DRG

: a. Pressing this key will change the mode of angle unit 

sequentially 

DEG

RAD

GRAD

  and display it 

on LCD.   

b. Pressing this key after [SHIFT] key shall change the 

mode of angle and shall convert the displayed data. 

DEG 

→

 RAD : RAD = DEG x   

π

/180 

RAD 

→

 GRAD : GRAD = RAD x 200/

π

GRAD 

→

 DEG : DEG = GRAD x 180/200 

(6) 

[0] ~ [9]

 : Press these keys in their logical sequence to enter 

numbers.   

(7) 

[     ]

RND

  : a. Use to set the decimal point when entering numbers. 

b. When press as the first number, it is regarded as [0] 

and [ • ] keys are pressed. 

c.  Random as a second function. 

  Pressing this key shall display the random number. 

  The range of random number is 0.000~0.999. 

(8) 

[+/–]

 :  a.  In setting data in the mantissa section, this key reverse 

code in the mantissa section similarly for exponent 

section, it reverse code in the exponent section. 

b.  For the operation result, this key reverse code in the 

mantissa section. 

(9) 

[+], [–], [x], [ 

÷

 ], [ ( ], [ ) ]

  a. When the key operations are performed by these keys 

according to a numerical expression, a result of operation is 

obtained according to mathematical priorities. Priorities 

discriminated are: 

  1) 1-variable function. 

2) Expression in "(    )"; (The most inner expression has priority 

in case of multiple parenthesis)   

3) 

x

y

, 

y

x

4) 

x, 

÷

  5) +, –    

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b. Whenever the key is operated, the calculator discriminates the 

above priorities and holds the data and operation keys pending 

as required. 

  This pending action is possible up to 6 times, and 15 levels or 

more pending become error. 

c. [ ( ] key is accepted only immediately after [CE], [+], [–], [x], [

÷

], 

[x

y

], [ 

y

x

], [=], [ ( ] keys can not accepted in all other cases. 

When this key is accepted, the displayed data is cleared to 0.

When [ ( ] key is first accepted, the special display “( )” 

illuminates. 

  When a parenthesis expression is completed [ ) ] and [=] key or 

When it is cleared by the [ON/C] key, etc. or when errors are 

generated, the special display “(    )” goes out. 

d. If it is within the allowable range of pending, [ ( ] can be input 

into any place in an expression as many times  as desired. 

However, if the key is pressed continuously 16 times or more, it 

becomes error. 

  e. 

From a viewpoint of numerical expression when the 

corresponding “ ) ” key is not pressed, the operation is not 

executed even if the “ ( ” key is pressed. On the other hand, 

When the “ ( ” key is pressed and the “ = ” key is the pressed 

without pressing the corresponding “ ) ” key, the operation is 

also completed according to the priority. 

(10) [X

→

M], [MR], [M+] Memory calculation 

a. The memory register “M” used by these keys is a completely 

independent single memory. 

b. Display data is added to “M” (memory register) by [M+] key. If 

data overflows at this time, the proceeding data is hold. 

c.  Display data is stored in “M” by [X

→

M] key. 

d. Contents of “M” is displayed by [MR] key. 

e. When any data except for 0 is stored in “M”, the special display 

“M” illuminates. 

(11) 

[

]

EXP

  :  1. Exponent select key. 

2. This key display a rounded value : 3.141592654.   

(12) 

[ ]

=

%

 : Calculation 

a. When any arithmetic functions constant mode has been set, the 

displayed number is converted from a percentage to a decimal. 

 Example: 

61.5% 

 Key 

Input 

    Display 

[6] [1] [ • ] [5] [SHIFT] [%]   

0.615 

b. When [=] key is pressed after [%] following arithmetic function 

will be executed. 

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CALCULATION 

EXAMPLE 

KEY OPERATION 

LCD DISPLAY 

WHAT IS 30% OF 

450? 

450 [x] 30 [SHIFT] [%]

[=]

0.3

135.

WHAT 

PERCENTAGE OF 

600 IS 120? 

(120

÷

600x100=20) 

120 [

÷

] 600 [SHIFT] [%]

[=]

6.

20.

WHAT 25% OF 400 

IS AN EXTRA? 

(400+(400x25/100) 

=500) 

400 [+] 25 [SHIFT] [%]

[=]

100.

500.

WHAT 25% 0F 400 

IS A DISCOUNT? 

(400–(400x25/100) 

=300) 

400 [–] 25 [SHIFT] [%]

[=]

100.

300.

(13)  Trigonometric and arctrigonometric function / Hyperbolic and arc 

hyperbolic trigonometric function (1-variable) 

([sin], [cos], [tan], [sin

–

1

], [cos

–

1

], [tan

–

1

]). 

These function are calculated according to respective defined 

areas and accuracy shown in behind chart, any displayed result 

of operation can become operators. 

(14)  Exponential and Logarithmic functions (1-variable). 

 ([In], 

[log], 

[e

X

], [10

X

]) Same as Trigonometric functions. 

(15)  Reciprocal, Square, Square Root, and Cube Root. 

([1/x] , [x

2

], [ 

 ] , [ 

3

 ]) Same as Trigonometric functions.    

(16) 

[        ]

  a. These keys convert degrees, minutes, seconds, into 

decimal degree and decimal degrees into degree 

minutes, and seconds. 

b. On the “

” format, the integer part of display data is 

regarded as degree, 2 digits below the decimal point 

as minutes and the 3rd digit and belows as seconds. 

Example: 

[

]         <degree minute second> 

 2.111111111 

[SHIFT] 

[

] 

  2            06      3999 

                        (39.99 seconds) 

(17) Binary mode ([SHIFT], 

[     ]

BIN

, [0], [1] ). 

a. Data input and output are both binary integers in a maximum 

of 10 digits. 

b. A negative number is expressed in binary of two's 

complement. 

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c. The range of internal operation is as shown below and if the 

result of the operation exceed the range, it becomes an error 

(overflow).  

Binary Number

Decimal Number

Outside the 

operation range

___

512 

≤

 DATA

Binary 

Positive 

Integer 

111111111 

111111110 

111111101 

: 

: 

10 

1 

0 

511 

510 

509 

: 

: 

2 

1 

0 

Binary  

Negative 

Integer 

(Complement) 

111111111 

111111110 

111111101 

:              : 

:              : 

1000000001 

1000000000 

–1 

–2 

–3 

: 

: 

–511 

–512 

Outside the operation 

range

 DATA 

≤

 –512

(18) Octal mode ( [SHIFT], 

[   ]

x  

OCT

, [0] ~ [7] ). 

a. Data input and output are both octal integers with a maximum 

of 10 digits. 

b. A negative number is expressed in the octal number display of 

two’s complement. 

c. The range of internal operation is as shown below and if the 

result of the operation exceed the range, it becomes an error 

(overflow). 

Octal Number

Decimal Number

Outside the 

operation range

___

536870912    

≤

 DATA

Octal 

Positive 

Integer 

3777777777 

3777777776 

:           

:           

536870911

536870910

:

:

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1 

0 

1

0

Octal  

Negative  

Integer 

(Complement) 

777777777 

777777776 

111111101 

:              : 

:              : 

4000000001 

4000000000 

–1

–2

:

:

–536870911

–536870912

Outside the operation 

range

DATA 

≤

 –536870913

(19) Hexadecimal Mode ([SHIFT], [HEX], [0] ~ [9], [A] ~ [F]). 

a. Data input and output are both hexadecimal integer with a 

maximum of 10 digits. 

b. A negative number is expressed in a hexadecimal    number of 

two's complement. 

c. The range of internal operation is as shown below and if the 

result of operation exceed the range, it becomes an error 

(overflow). 

Hexadecimal Number

Decimal Number

Outside the 

operation range

___

1x10

10 

≤

 DATA

Hexadecimal  

Positive 

Integer 

2 5 4 0 B E 3 F F 

2 5 4 0 B E 3 F E 

          :               

:               

1 

0 

9999999999 

9999999998 

: 

: 

1

0

Hexadecimal 

Negative  

Integer 

(Complement) 

F F F F F F F F F F 

F F F F F F F F F E 

:                   

:                   

F D A B F 4 1 C 0 2   

F D A B F 4 1 C 0 1 

–1

–2

:

:

–9999999998

–9999999999

Outside the operation 

range

DATA 

≤

 –1x10

10

(20) 

[

]

SCI

FIX

 1. Used to switch between display mode. 

2. Used to set the number of digits display after the 

decimal point. Example: 

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Key 

input display 

 [2] 

[

÷

] [3] [=] 

0.666666666 

 [SHIFT] 

[

]

SCI

FIX

 [5] 

0.66667 

[

]

SCI

FIX

 6.66667-01 

 [SHIFT] 

[

]

SCI

FIX

 [ • ]  6.6666666-01 

(21) [X

↔

Y] : Exchange key. 

Used to exchange the displayed number with the 

contents of an internal register. 

(22) [a], [b], [R

→

P], [P

→

R] : Coordinate conversion. 

a. These keys convert the rectangular coordinate into    the polar 

coordinate and the polar coordinate into the rectangular 

coordinate. The range units that have been set by the [DRG] 

key follow. 

b. Respective defined areas and accuracy are as shown in  

behind chart however, the range of 

θ 

obtained by R

→

P in 

degree is as follows: 

  1st 

Quadrant 

0°

≤

θ

≤

90° 

  2nd 

Quadrant 

90°

≤

θ

≤

 180° 

  3rd 

Quadrant 

–180°

≤

θ

≤

–90° 

  4th 

Quadrant 

–90°

≤

θ

≤

 0° 

c. Input of 2 variable is performed by setting x or r pressing [a] 

key and y or 

θ 

pressing [b] key. 

d. The operation result of x or r is obtained in the display register 

or by pressing [a] key and y or 

θ

  by pressing [b] key. 

Input Data 

Result 

a b a b 

R

→

P 

(Rectangular

→

Polar) 

x y  r 

θ

P

→

R 

(Polar

→

Rectangular) 

r 

θ

x y 

(

→

 r,

θ

) r = 

2

2

y

x

+

,

θ

= tan

–1

 y/x 

(

→

 x, y) x = r cos

θ

, y = r sin

θ

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e. (R

→

P Conversion) 

([x, y] 

→

 [r,

θ

]) 

f. (P

→

R Conversion) 

([r,

θ

] 

→

 [x, y]) 

Key operation

Display 

Key operation

Display 

x x 

θ

θ

a x b 

θ

y y r  r 

b y a r 

R

→

P 

r 

P

→

R 

x 

b 

θ

b y 

(23) Statistical calculation mode ([SHIFT] 

[

]

ON/C

SD

). 

a. When you calculate the calculation of statistics, pressing 

[SHIFT] 

[

]

ON/C

SD

  keys for statistics mode ("SD" sign ). When   

you clear to statistics mode, press the same keys ([SHIFT] 

[

]

ON/C

SD

 ).

b. You can't perform the memory calculation, parenthesis 

calculation or conversion of coordinates. 

c.  [DATA] : Data entry key.   

[DEL] : Data clear key. 

d. you can calculate the following statistical volume in this 

calculator. 

1. n : Number of data (Number of sample). 

 2. 

Σ

x : Total of datum. 

 3. 

Σ

x

2

 : Total of square of each data. 

 4. 

x

  : Average of datum. 

 5. 

σ

n–1

: The sample standard deviation of the data. 

 6. 

σ

n

 : The population standard deviation of the data. 

n

x

n

xi

x

n

i

Σ

=

=

∑

=

1

1

/

)

(

1

)

(

2

2

1

2

1

−

Σ

−

Σ

=

−

−

=

∑

=

−

n

n

x

x

n

x

xi

n

i

n

σ

n

n

x

x

n

x

xi

n

i

n

/

)

(

)

(

2

2

1

2

Σ

−

Σ

=

−

=

∑

=

σ