<s>
The	O
PlayStation	B-Device
controller	I-Device
is	O
the	O
first	O
gamepad	B-Device
released	O
by	O
Sony	O
Computer	O
Entertainment	O
for	O
its	O
PlayStation	B-Device
home	B-Device
video	I-Device
game	I-Device
console	I-Device
.	O
</s>
<s>
The	O
original	O
version	O
(	O
model	O
SCPH-1010	O
)	O
was	O
released	O
alongside	O
the	O
PlayStation	B-Device
on	O
3	O
December	O
1994	O
.	O
</s>
<s>
Based	O
on	O
the	O
basic	O
button	O
configuration	O
established	O
with	O
Nintendo	O
's	O
Super	O
NES	O
Controller	O
,	O
the	O
PlayStation	B-Device
controller	I-Device
added	O
a	O
second	O
pair	O
of	O
shoulder	O
buttons	O
for	O
the	O
middle	O
fingers	O
.	O
</s>
<s>
Intended	O
to	O
update	O
the	O
gamepad	B-Device
for	O
navigating	O
3D	O
environments	O
such	O
as	O
the	O
ones	O
PlayStation	B-Device
was	O
designed	O
to	O
generate	O
,	O
the	O
concept	O
behind	O
featuring	O
shoulder	O
buttons	O
for	O
both	O
the	O
index	O
and	O
middle	O
fingers	O
was	O
to	O
implement	O
two-way	O
directional	O
depth	O
controls	O
using	O
the	O
two	O
sets	O
of	O
buttons	O
.	O
</s>
<s>
Using	O
the	O
simple	O
geometric	O
shapes	O
of	O
a	O
green	O
triangle	O
,	O
a	O
red	O
circle	O
,	O
a	O
blue	O
cross	O
,	O
and	O
a	O
pink	O
square	O
(	O
,	O
,	O
,	O
)	O
to	O
label	O
its	O
action	B-Device
buttons	I-Device
rather	O
than	O
traditionally	O
used	O
letters	O
or	O
numbers	O
,	O
the	O
PlayStation	B-Device
controller	I-Device
established	O
a	O
trademark	O
which	O
would	O
be	O
incorporated	O
heavily	O
into	O
the	O
PlayStation	B-Device
brand	O
.	O
</s>
<s>
In	O
an	O
interview	O
with	O
Teiyu	O
Goto	O
,	O
designer	O
of	O
the	O
original	B-Device
PlayStation	I-Device
controller	O
,	O
he	O
explained	O
what	O
the	O
symbols	O
mean	O
:	O
the	O
circle	O
and	O
cross	O
represent	O
"	O
yes	O
"	O
and	O
"	O
no	O
"	O
,	O
respectively	O
(	O
which	O
explains	O
their	O
common	O
use	O
as	O
"	O
confirm	O
"	O
and	O
"	O
cancel	O
"	O
in	O
games	O
;	O
this	O
layout	O
is	O
reversed	O
in	O
Western	O
games	O
)	O
;	O
the	O
triangle	O
symbolizes	O
a	O
point	O
of	O
view	O
and	O
the	O
square	O
is	O
equated	O
to	O
a	O
sheet	O
of	O
paper	O
there	O
to	O
be	O
used	O
to	O
access	O
menus	O
.	O
</s>
<s>
The	O
PlayStation	B-Device
2	I-Device
console	O
is	O
backwards-compatible	B-General_Concept
with	O
the	O
original	B-Device
PlayStation	I-Device
controller	O
,	O
with	O
limited	O
functionality	O
due	O
to	O
a	O
lack	O
of	O
analog	O
sticks	O
and	O
pressure-sensitive	O
buttons	O
.	O
</s>
<s>
On	O
April	O
2	O
,	O
1996	O
in	O
Japan	O
,	O
Sony	O
released	O
a	O
revised	O
version	O
of	O
the	O
PlayStation	B-Device
controller	I-Device
(	O
model	O
SCPH-1080	O
)	O
,	O
which	O
is	O
10%	O
larger	O
than	O
the	O
launch	O
model	O
and	O
features	O
a	O
longer	O
cord	O
with	O
a	O
ferrite	O
bead	O
.	O
</s>
<s>
This	O
model	O
was	O
bundled	O
with	O
all	O
subsequent	O
PlayStation	B-Device
consoles	I-Device
,	O
including	O
the	O
North	O
American	O
and	O
European	O
launch	O
models	O
(	O
which	O
were	O
already	O
introduced	O
a	O
year	O
prior	O
in	O
September	O
1995	O
)	O
.	O
</s>
<s>
After	O
briefly	O
selling	O
the	O
Dual	B-Device
Analog	I-Device
Controller	I-Device
in	O
1997	O
,	O
Sony	O
began	O
phasing	O
out	O
the	O
PlayStation	B-Device
controller	I-Device
later	O
that	O
year	O
with	O
the	O
introduction	O
of	O
the	O
DualShock	B-Device
controller	O
,	O
which	O
would	O
become	O
the	O
new	O
standard	O
controller	O
for	O
the	O
PlayStation	B-Device
,	O
although	O
the	O
first	O
game	O
to	O
require	O
its	O
use	O
,	O
Ape	B-Application
Escape	I-Application
,	O
would	O
only	O
be	O
released	O
two	O
years	O
later	O
.	O
</s>
