CITIZEN SR-135T User Manual

Page 8

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SR8D1A-E.RTF SIZE : 140x75mm SCALE 2:1 2003/8/22

-

E8 -

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], [RÆP], [PÆR] : 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 RÆP in

degree is as follows:

1st

Quadrant

≤ 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

RÆP

(RectangularÆPolar)

x y r

θ

PÆR

(PolarÆRectangular)

r

θ

x y

(Ær,

θ) r =

2

2

y

x

+

,

θ = tan

−1

y/x

(Æx, y) x = r cos θ, y = r sinθ

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