<s>
It	O
is	O
implemented	O
as	O
a	O
server	O
that	O
controls	O
a	O
range	O
of	O
physical	O
devices	O
(	O
including	O
digital	O
switches	O
for	O
input	O
and	O
output	O
devices	O
such	O
as	O
levers	O
and	O
pellet	O
dispensers	O
,	O
multiple	O
monitors	B-Device
,	O
sound	O
cards	O
,	O
and	O
touchscreens	B-Device
)	O
.	O
</s>
<s>
The	O
server	O
communicates	O
with	O
clients	O
via	O
a	O
TCP/IP	B-Protocol
network	I-Protocol
link	O
and	O
manages	O
resources	O
for	O
them	O
.	O
</s>
