<s>
CRAM	O
,	O
or	O
Card	O
Random-Access	O
Memory	O
,	O
model	O
353-1	O
,	O
was	O
a	O
data	B-General_Concept
storage	I-General_Concept
device	I-General_Concept
invented	O
by	O
NCR	O
,	O
which	O
first	O
appeared	O
on	O
their	O
model	O
NCR-315	B-Device
mainframe	B-Architecture
computer	I-Architecture
in	O
1962	O
.	O
</s>
<s>
It	O
was	O
also	O
available	O
for	O
NCR	O
's	O
third	O
generation	O
NCR	B-Device
Century	I-Device
series	O
as	O
the	O
NCR/653	O
-100	O
.	O
</s>
<s>
CRAM	O
was	O
very	O
successful	O
in	O
the	O
1960s	O
,	O
offering	O
a	O
fast	O
and	O
secure	O
storage	O
alternative	O
to	O
magnetic	O
tape	O
,	O
but	O
was	O
superseded	O
by	O
the	O
development	O
of	O
superior	O
disk	B-Device
drive	I-Device
technology	O
.	O
</s>
