<s>
The	O
IBM	B-Device
7700	I-Device
Data	I-Device
Acquisition	I-Device
System	I-Device
was	O
announced	O
by	O
IBM	O
on	O
December	O
2	O
,	O
1963	O
.	O
</s>
<s>
The	O
IBM	B-Device
7700	I-Device
was	O
short-lived	O
,	O
being	O
replaced	O
by	O
the	O
IBM	B-Device
1800	I-Device
Data	I-Device
Acquisition	I-Device
and	I-Device
Control	I-Device
System	I-Device
on	O
November	O
30	O
,	O
1964	O
.	O
</s>
<s>
Two	O
IBM	B-Device
7700	I-Device
Data	I-Device
Acquisition	I-Device
Systems	I-Device
are	O
known	O
to	O
have	O
existed	O
:	O
one	O
at	O
the	O
University	O
of	O
Rochester	O
and	O
the	O
other	O
at	O
Stanford	O
University	O
.	O
</s>
<s>
The	O
IBM	B-Device
7700	I-Device
is	O
an	O
18-bit	O
system	O
,	O
with	O
instructions	O
occupying	O
two	O
18-bit	O
words	O
.	O
</s>
<s>
Address	B-General_Concept
space	I-General_Concept
is	O
262,144	O
words	O
,	O
but	O
the	O
two	O
machines	O
known	O
to	O
have	O
been	O
built	O
had	O
16	O
,	O
384	O
,	O
32,768	O
or	O
49,152	O
words	O
.	O
</s>
<s>
The	O
IBM	B-Device
7700	I-Device
is	O
contemporary	O
with	O
the	O
IBM	O
7000	O
series	O
but	O
not	O
considered	O
a	O
member	O
of	O
it	O
.	O
</s>
