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Citizen SR-135FRD: CALCULATION

CALCULATION: Citizen SR-135FRD

• Special display

Examples of display

• Floating of -6000 1/x; FIX =7

• Same as above, engineering display

• Error display

CALCULATION

1. Calculation order of priority.

Because there is automatic priority of operations Logic the

calculations, may be performed as expressed in the equation.

(Calculation order of priority).

1. Function calculations.

2. Calculation in ( ).

3. Power and Root calculation.

4. Multiplication and division.

5. Addition and subtraction.

(Where the priority of two operations are the same they are

performed in the order in which they appear).

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2 COS

60

°

5 4 x 7 + 3 x 0.5

÷

(1) (4)

Example:

(2) (5)

= 4.308820344

(3) (6)

(7)

Key Input Display

[5] [

÷

]

5.

2

[4] [x

]

16.

.............. (1)

[x]

0.3125

.............. (2)

[7] [+]

2.1875

.............. (3)

[3] [x]

3.

y

[ • ] [5] [x

]

0.5

[6] [0] [cos]

0.5

.............. (4)

[=]

4.308820344

......(5)(6)(7)

When execution starts with high priority calculations it is necessary

to save low priority calculation, and for that reason there are 6

internal storage levels supplied.

These storage levels are also used in calculations involving

parenthesis, therefore as long as priority operations involving

parenthesis do not exceed 15 levels the calculations may be

performed as they appear in the equation.

2. Addition, subtraction, multiplication and

division and constant calculations.

The added in addition, subtracted in subtraction, multiplicand in

y

multiplication, the divisor in division and the x value in power (x

)

y

and Root (

x

).Calculations takes on the value of constant.

Example:

1. 123 + 456

= 7. 123

÷

4 =

2. 789 + 456

= 8. 456

÷

4 =

4

3. 123 – 456

= 9. 7

=

4

4. 789 – 456

= 10. 8

=

5. 123 x

456 = 11.

5

127

=

6. 123 x

789 = 12.

5

1024

=

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NO. Key Input Display

1 . [1] [2] [3] [+] [4] [5] [6] [=]

579.

2 . [7] [8] [9] [=]

1245.

3 . [1] [2] [3] [–] [4] [5] [6] [=]

– 333.

4 . [7] [8] [9] [=]

333.

5 . [1] [2] [3] [x] [4] [5] [6] [=]

56088.

6 . [7] [8] [9] [=]

97047.

7 .

[1] [2] [3] [

÷

] [4] [=]

30.75

8 . [4] [5] [6] [=]

114.

y

9 .

[7] [x

] [4] [=]

2401.

10 . [8] [=]

4096.

y

11 .

[1] [2] [7] [SHIFT] [

2.634879413

x

] [5] [=]

12 . [1] [0] [2] [4] [=]

4.

3. Memory calculation

Input and output the independent memory is done by pressing

[X

→

M], [MR], [M+]

Example: 123 x 2

456 x 3

789 x 4

+) 1470

Total 6240

Key Input Display

[ON/C] [X

→

M]

0.

M

[1] [2] [3] [x] [2] [M+]

246.

M

[4] [5] [6] [x] [3] [M+]

1368.

M

[7] [8] [9] [x] [4] [M+]

3156.

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M

[1] [4] [7] [0] [M+]

1470.

M

[MR]

6240.

4. Calculations with parenthesis.

Parenthesis are used when it is desired to perform calculations in a

y

y

first priority that usually followed for the +, –, x,

÷

, x

,

x

,

operations. In other words the “(” “)” force those prior operations it

to be pending until the calculation inside the parenthesis are

performed.

Parenthesis may be used in a chained calculation as long as the

total of levels ending due to the automatic priority Logic and

parenthesis does not exceed 15.

Example: 6+ [(5–3.6+5)x0.8–6] x3.2 =

Key Input Display

[6] [+] [ ( ] [ ( ]

0.

[5] [–] [3] [ • ] [6] [+] [5] [ ) ]

6.4

[x] [ • ] [8] [–] [6] [ ) ]

– 0.88

[x] [3] [ • ] [2] [=]

3.184

5. Coordinate conversion:

(1) polar

→

rectangular

Example:

Key Input Display

y

[2] [a]

2.

[60] [b]

60.

[SHIFT] [P

→

R]

1.

x

[b]

1.732050808

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