Справочник Пользователя для Citizen SR-270II

5

•  The calculator enables you to repeat  the last operation executed by

pressing [ = ] key for further calculation.  See Example

 

14.

•  Even if calculations are concluded with the [ = ] key, the result obtained

can be used for further calculation.  See Example

 

15.

•  Answer function stores the most recently calculated result. It is re-

tained even after the power is turned off. Once a numeric value or
numeric expression is entered and [ = ] is pressed, the result is stored
by this function.  See Example 16.

(Note) : Even if execution of a calculation results in an error, however,

Answer memory retains its current value.

☺

•  The calculator can calculate common and natural logarithms and anti-

logarithms using [ log ], [ ln ], [ 2nd ] [ 10 

x

 ], and [ 2nd ] [ e 

x

 ]. See

Example 17~19.

Fraction value display is as follow :

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

the total number of digits of a fractional values (integer + nu-
merator + denominator + separator marks) exceeds 10.

•  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.  See Example

 

20.

•  By pressing [ 2nd ] [ 

d

/

c

 ], 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

 ] .See Example

 

21.

•  Calculations containing both fractions and decimals are calculated in

decimal format.  See Example

 

22.

The angle units (DEG, RAD, GRAD) is set by pressing [ MODE ] to
display the angle menu. The relation among the three angle units is :

180 ° =

 

π 

rad = 200 grad

Angle conversions ( See Example

 

23.) :

1.

Change the default angle settings to the units you
want to convert  to.

2.

Enter the value of the unit to convert.

3.

Press [ DRG

→

 ] to display the menu.

                  

3

       

2

        

1

G

      

R

       

D

The units you can select are D (degrees),  R (radians), G
(Gradians).
4.

Choose the units you are converting from.

5.

Press [ = ].

•  SR-270

 provides standard trigonometric functions and inverse trigo-

nometric functions - sin, cos, tan, sin 

–1

, cos 

–1

 and tan 

–1

. See Example

24~26.

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

angle unit you want.

•  SR-270

 uses [ 2nd ] [ HYP ] to calculate the hyperbolic functions and

inverse- hyperbolic functions - sinh, cosh, tanh, sinh 

–1

, cosh 

–1

 and

tanh 

–1

. See Example 27~28.

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

angle unit you want.

↔

↔

↔

↔

↔

Sexagesimal notation is as follow

    12 

 59 

 45.6 

    Represent 12 Degree, 59 Minutes, 45.6 Seconds

•  The calculator can preform the conversion between decimal and

sexagesimal numbers by [ 

] and [ 2nd ] [ 

 ]. See Example

29~30.

Rectangular Coordinates

Polar Coordinates

 56 

┘

 

5

 

┘

 12           Display of  56

         

5

 

┘

12        Display of

12

5

12

5