Citizen SR-135N Manual De Instrucciones página 9

(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
2nd
3rd
4th
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.
R → P
(Rectangular → Polar)
P → R
(Polar → Rectangular)
( → r,θ) r =
2
x
( → x, y) x = r cos θ , y = r sin θ
SR135_English_090326.rtf
2011/12/29
Key input
÷
[2] [
[SHIFT]
FIX
[
SCI
[SHIFT]
0°≤ θ ≤ 90°
Quadrant
90°≤ θ ≤ 180°
Quadrant
–180°≤ θ ≤–90°
Quadrant
–90°≤ θ ≤ 0°
Quadrant
Input Data
a
x
r
2
–1
+
,θ= tan y/x
y
-
E8 -
SIZE
display
] [3] [=] 0.666666666
FIX
[5] 0.66667
[ ]
SCI
6.66667-01
]
FIX
[ • ] 6.6666666-01
[ ]
SCI
b a
y r
x
θ
: 140x75mm
Result
b
θ
y
SCALE 2:1