<s>
The	O
Mark	B-Device
8	I-Device
Fire	I-Device
Control	I-Device
Computer	I-Device
was	O
developed	O
by	O
Bell	O
Laboratories	O
during	O
World	O
War	O
II	O
.	O
</s>
<s>
It	O
was	O
initially	O
requested	O
by	O
the	O
USN	O
Bureau	O
of	O
Ordnance	O
as	O
an	O
alternative	O
to	O
the	O
Ford	O
Instruments	O
Mark	B-Device
I	I-Device
Fire	I-Device
Control	I-Device
Computer	I-Device
,	O
in	O
case	O
supplies	O
of	O
the	O
Mk	O
I	O
were	O
interrupted	O
or	O
were	O
unable	O
to	O
be	O
manufactured	O
in	O
the	O
required	O
numbers	O
.	O
</s>
<s>
The	O
Mk	O
8	O
technology	O
was	O
similar	O
to	O
that	O
used	O
in	O
the	O
M9	O
gun	B-Device
data	I-Device
computer	I-Device
used	O
by	O
the	O
US	O
Army	O
for	O
coast	O
defence	O
fire	O
control	O
and	O
in	O
the	O
SCR-584	O
radar	O
system	O
computer	O
.	O
</s>
