<s>
A	O
content-addressable	B-Operating_System
parallel	I-Operating_System
processor	I-Operating_System
(	O
CAPP	O
)	O
also	O
known	O
as	O
associative	O
processor	O
is	O
a	O
type	O
of	O
parallel	B-Operating_System
processor	I-Operating_System
which	O
uses	O
content-addressing	B-Data_Structure
memory	I-Data_Structure
(	O
CAM	B-Data_Structure
)	O
principles	O
.	O
</s>
<s>
The	O
syntactic	O
structure	O
of	O
their	O
computing	O
algorithm	O
are	O
simple	O
,	O
whereas	O
the	O
number	O
of	O
concurrent	B-Operating_System
processes	O
may	O
be	O
very	O
large	O
,	O
only	O
limited	O
by	O
the	O
number	O
of	O
locations	O
in	O
the	O
CAM	B-Data_Structure
.	O
</s>
<s>
The	O
best-known	O
CAPP	O
may	O
be	O
STARAN	B-Device
,	O
completed	O
in	O
1972	O
;	O
several	O
similar	O
systems	O
were	O
later	O
built	O
in	O
other	O
countries	O
.	O
</s>
<s>
A	O
CAPP	O
is	O
distinctly	O
different	O
from	O
a	O
Von	B-Architecture
Neumann	I-Architecture
architecture	I-Architecture
or	O
classical	O
computer	O
that	O
stores	O
data	O
in	O
cells	O
addressed	O
individually	O
by	O
numeric	O
address	O
.	O
</s>
<s>
As	O
a	O
parallel	B-Operating_System
processor	I-Operating_System
,	O
it	O
acts	O
on	O
all	O
of	O
the	O
cells	O
containing	O
that	O
content	O
at	O
once	O
.	O
</s>
<s>
A	O
typical	O
CAPP	O
might	O
consist	O
of	O
an	O
array	O
of	O
content-addressable	B-Data_Structure
memory	I-Data_Structure
of	O
fixed	O
word	O
length	O
,	O
a	O
sequential	O
instruction	O
store	O
,	O
and	O
a	O
general	O
purpose	O
computer	O
of	O
the	O
Von	B-Architecture
Neumann	I-Architecture
architecture	I-Architecture
that	O
is	O
used	O
to	O
interface	O
peripherals	O
.	O
</s>
