<s>
The	O
AN/UYK	B-Device
-43	I-Device
was	O
the	O
standard	O
32-bit	O
computer	O
of	O
the	O
United	O
States	O
Navy	O
for	O
surface	O
ship	O
and	O
submarine	O
platforms	O
,	O
with	O
the	O
first	O
unit	O
delivered	O
in	O
October	O
,	O
1984	O
.	O
</s>
<s>
The	O
size	O
of	O
a	O
refrigerator	O
,	O
it	O
replaced	O
the	O
older	O
AN/UYK	B-Device
-7	I-Device
,	O
both	O
built	O
by	O
UNISYS	O
and	O
shared	O
the	O
same	O
instruction	B-General_Concept
set	I-General_Concept
.	O
</s>
<s>
An	O
enhancement	O
to	O
the	O
UYK-43	O
,	O
the	O
Open	O
Systems	O
Module	O
(	O
OSM	O
)	O
,	O
allows	O
up	O
to	O
six	O
VMEbus	B-Architecture
Type	O
6U	O
commercial	O
off-the-shelf	O
(	O
COTS	O
)	O
cards	O
to	O
be	O
installed	O
in	O
a	O
UYK-43	O
enclosure	O
.	O
</s>
<s>
The	O
historic	O
AN/UYK	B-Device
-43	I-Device
architecture	O
includes	O
active	O
redundancy	O
.	O
</s>
<s>
The	O
standardized	O
computer	O
programming	O
language	O
associated	O
with	O
UYK	O
and	O
AYK	O
series	O
computers	O
is	O
called	O
CMS-2	B-Language
developed	O
by	O
Rand	O
Corporation	O
.	O
</s>
