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], [R
Æ
P], [P
Æ
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
Æ
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
Æ
P
(Rectangular
Æ
Polar)
x y r
θ
P
Æ
R
(Polar
Æ
Rectangular)
r
θ
x y
(
Æ
r,
θ
) r =
2
2
y
x
+
,
θ
= tan
−
1
y/x
(
Æ
x, y) x = r cos
θ
, y = r sin
θ
