<s>
In	O
computing	O
,	O
sequential	B-General_Concept
access	I-General_Concept
memory	I-General_Concept
(	O
SAM	O
)	O
is	O
a	O
class	O
of	O
data	B-General_Concept
storage	I-General_Concept
devices	I-General_Concept
that	O
read	O
stored	B-General_Concept
data	I-General_Concept
in	O
a	O
sequence	O
.	O
</s>
<s>
This	O
is	O
in	O
contrast	O
to	O
random	B-Architecture
access	I-Architecture
memory	I-Architecture
(	O
RAM	B-Architecture
)	O
where	O
data	O
can	O
be	O
accessed	O
in	O
any	O
order	O
.	O
</s>
<s>
Sequential	B-General_Concept
access	I-General_Concept
devices	O
are	O
usually	O
a	O
form	O
of	O
magnetic	B-Architecture
storage	I-Architecture
or	O
optical	B-General_Concept
storage	I-General_Concept
.	O
</s>
<s>
While	O
sequential	B-General_Concept
access	I-General_Concept
memory	I-General_Concept
is	O
read	O
in	O
sequence	O
,	O
arbitrary	O
locations	O
can	O
still	O
be	O
accessed	O
by	O
"	O
seeking	O
"	O
to	O
the	O
requested	O
location	O
.	O
</s>
<s>
Magnetic	O
sequential	B-General_Concept
access	I-General_Concept
memory	I-General_Concept
is	O
typically	O
used	O
for	O
secondary	O
storage	O
in	O
general-purpose	O
computers	O
due	O
to	O
their	O
higher	O
density	O
at	O
lower	O
cost	O
compared	O
to	O
RAM	B-Architecture
,	O
as	O
well	O
as	O
resistance	O
to	O
wear	O
and	O
non-volatility	B-General_Concept
.	O
</s>
<s>
Magnetic	O
tape	O
is	O
a	O
type	O
of	O
sequential	B-General_Concept
access	I-General_Concept
memory	I-General_Concept
still	O
in	O
use	O
;	O
historically	O
,	O
drum	B-General_Concept
memory	I-General_Concept
has	O
also	O
been	O
used	O
.	O
</s>
