<s>
The	O
Chippewa	B-Operating_System
Operating	I-Operating_System
System	I-Operating_System
(	O
COS	O
)	O
is	O
a	O
discontinued	O
operating	B-General_Concept
system	I-General_Concept
developed	O
by	O
Control	O
Data	O
Corporation	O
for	O
the	O
CDC	B-Device
6600	I-Device
,	O
generally	O
considered	O
the	O
first	O
supercomputer	B-Architecture
in	O
the	O
world	O
.	O
</s>
<s>
The	O
Chippewa	O
was	O
a	O
rather	O
simple	O
job	B-General_Concept
control	I-General_Concept
oriented	O
system	O
derived	O
from	O
the	O
earlier	O
CDC	B-Device
3000	I-Device
.	O
</s>
<s>
Its	O
design	O
influenced	O
the	O
later	O
CDC	B-Operating_System
Kronos	I-Operating_System
and	O
SCOPE	B-Operating_System
operating	B-General_Concept
systems	I-General_Concept
.	O
</s>
<s>
It	O
is	O
distinct	O
from	O
and	O
preceded	O
the	O
Cray	B-Operating_System
Operating	I-Operating_System
System	I-Operating_System
(	O
also	O
called	O
"	O
COS	O
"	O
)	O
at	O
Cray	O
.	O
</s>
