<s>
MIDAC	B-Device
was	O
the	O
acronym	O
for	O
the	O
Michigan	O
Digital	O
Automatic	O
Computer	O
,	O
a	O
pioneering	O
digital	O
computer	O
at	O
the	O
University	O
of	O
Michigan	O
,	O
the	O
university	O
's	O
first	O
.	O
</s>
<s>
MIDAC	B-Device
was	O
patterned	O
after	O
SEAC	B-Device
(	O
Standards	B-Device
Electronic	I-Device
Automatic	I-Device
Computer	I-Device
)	O
,	O
built	O
in	O
1950	O
for	O
the	O
U.S.	O
U.S.	O
National	O
Bureau	O
of	O
Standards	O
.	O
</s>
<s>
The	O
sixth	O
such	O
digital	O
automatic	O
computer	O
at	O
a	O
research	O
university	O
,	O
and	O
the	O
first	O
computer	O
of	O
its	O
kind	O
in	O
the	O
Midwest	O
,	O
MIDAC	B-Device
was	O
a	O
massive	O
installation	O
.	O
</s>
<s>
Its	O
main	O
memory	O
was	O
a	O
rotating	O
magnetic	B-General_Concept
drum	I-General_Concept
,	O
capable	O
of	O
storing	O
6,000	O
"	O
words	O
"	O
of	O
encoded	O
data	O
.	O
</s>
<s>
The	O
MIDAC	B-Device
went	O
online	O
on	O
June	O
1	O
,	O
1953	O
,	O
and	O
was	O
operated	O
by	O
Willow	O
Run	O
's	O
Digital	O
Computation	O
Department	O
under	O
the	O
leadership	O
of	O
John	O
Carr	O
III	O
until	O
1958	O
,	O
when	O
it	O
was	O
supplanted	O
by	O
the	O
faster	O
Michigan	O
Digital	O
Special	O
Automatic	O
Computer	O
(	O
MDSAC	O
)	O
–	O
an	O
IBM	B-Device
650	I-Device
–	O
and	O
the	O
Air	O
Force	O
removed	O
the	O
equipment	O
.	O
</s>
<s>
Although	O
it	O
was	O
not	O
created	O
there	O
,	O
a	O
piece	O
of	O
the	O
ENIAC	B-Device
(	O
Electronic	B-Device
Numerical	I-Device
Integrator	I-Device
And	I-Device
Computer	I-Device
)	O
exists	O
at	O
the	O
University	O
of	O
Michigan	O
.	O
</s>
<s>
It	O
was	O
developed	O
at	O
the	O
Moore	O
School	O
of	O
Engineering	O
at	O
the	O
University	O
of	O
Pennsylvania	O
,	O
and	O
was	O
brought	O
to	O
Michigan	O
in	O
the	O
mid-1960s	O
by	O
professor	O
Arthur	O
Burks	O
,	O
who	O
had	O
served	O
as	O
a	O
principal	O
designer	O
of	O
ENIAC	B-Device
.	O
</s>
<s>
Burks	O
came	O
to	O
the	O
University	O
of	O
Michigan	O
in	O
1946	O
as	O
a	O
professor	O
of	O
philosophy	O
,	O
but	O
went	O
on	O
to	O
study	O
at	O
the	O
Moore	O
School	O
before	O
being	O
drawn	O
into	O
the	O
ENIAC	B-Device
project	O
.	O
</s>
