<s>
The	O
Model	B-Device
V	I-Device
was	O
among	O
the	O
early	O
electromechanical	O
general	O
purpose	O
computers	O
,	O
designed	O
by	O
George	O
Stibitz	O
and	O
built	O
by	O
Bell	O
Telephone	O
Laboratories	O
,	O
operational	O
in	O
1946	O
.	O
</s>
<s>
The	O
tape-controlled	O
(	O
Harvard	B-Architecture
architecture	I-Architecture
)	O
machine	O
had	O
two	O
(	O
design	O
allowed	O
for	O
a	O
total	O
of	O
six	O
)	O
processors	B-General_Concept
(	O
"	O
computers	O
"	O
)	O
that	O
could	O
operate	O
independently	O
,	O
an	O
early	O
form	O
of	O
multiprocessing	B-Operating_System
.	O
</s>
<s>
The	O
Model	B-Device
V	I-Device
weighed	O
about	O
.	O
</s>
<s>
Had	O
a	O
very	O
primitive	O
form	O
of	O
an	O
operating	B-General_Concept
system	I-General_Concept
,	O
albeit	O
in	O
hardware	O
.	O
</s>
<s>
Simplified	O
version	O
of	O
the	O
Model	B-Device
V	I-Device
(	O
only	O
one	O
processor	B-General_Concept
,	O
about	O
half	O
the	O
relays	O
)	O
but	O
with	O
several	O
improvements	O
,	O
including	O
one	O
of	O
the	O
earliest	O
use	O
of	O
the	O
microcode	B-Device
.	O
</s>
