<s>
The	O
Univac	B-Device
Series	I-Device
70	I-Device
is	O
an	O
obsolete	O
family	O
of	O
mainframe	O
class	O
computer	O
systems	O
from	O
UNIVAC	O
first	O
introduced	O
in	O
1973	O
.	O
</s>
<s>
RCA	O
had	O
marketed	O
the	O
Spectra	B-Device
70	I-Device
Series	O
(	O
70/15	O
,	O
70/25	O
,	O
70/35	O
,	O
70/45	O
,	O
70/46	O
,	O
70/55	O
,	O
70/60	O
,	O
70/61	O
)	O
that	O
were	O
compatible	O
with	O
the	O
IBM	B-Application
System/360	I-Application
series	O
at	O
the	O
application	O
level	O
,	O
and	O
the	O
RCA	O
Series	O
(	O
RCA	O
2	O
,	O
3	O
,	O
6	O
,	O
7	O
)	O
competing	O
against	O
the	O
IBM	B-Device
System/370	I-Device
.	O
</s>
<s>
In	O
January	O
1972	O
,	O
Sperry	O
took	O
over	O
the	O
RCA	O
customer	O
base	O
,	O
offering	O
the	O
Spectra	B-Device
70	I-Device
and	O
RCA	O
Series	O
computers	O
as	O
the	O
UNIVAC	B-Device
Series	I-Device
70	I-Device
.	O
</s>
<s>
A	O
number	O
of	O
the	O
RCA	O
customers	O
continued	O
with	O
Sperry	O
,	O
and	O
the	O
UNIVAC	B-Device
Series	I-Device
90	I-Device
90/60	O
and	O
90/70	O
systems	O
would	O
provide	O
an	O
upgrade	O
path	O
for	O
the	O
customers	O
with	O
70/45	O
,	O
70/46	O
,	O
RCA	O
2	O
and	O
3	O
systems	O
.	O
</s>
