<s>
The	O
Livermore	B-Operating_System
Time	I-Operating_System
Sharing	I-Operating_System
System	I-Operating_System
(	O
LTSS	O
)	O
was	O
a	O
supercomputer	B-Architecture
operating	B-General_Concept
system	I-General_Concept
originally	O
developed	O
by	O
the	O
Lawrence	O
Livermore	O
Laboratories	O
for	O
the	O
Control	O
Data	O
Corporation	O
6600	B-Device
and	O
7600	B-Device
series	O
of	O
supercomputers	B-Architecture
in	O
1965	O
.	O
</s>
<s>
LTSS	O
resulted	O
in	O
the	O
Cray	B-Operating_System
Time	I-Operating_System
Sharing	I-Operating_System
System	I-Operating_System
and	O
then	O
the	O
Network	B-Operating_System
Livermore	I-Operating_System
Timesharing	I-Operating_System
System	I-Operating_System
(	O
NLTSS	B-Operating_System
)	O
.	O
</s>
