<s>
The	O
Z11	B-Device
was	O
a	O
computer	O
,	O
the	O
first	O
serially	O
produced	O
machine	O
of	O
the	O
Zuse	O
KG	O
.	O
</s>
<s>
Beginning	O
in	O
1957	O
the	O
Z11	B-Device
could	O
be	O
programmed	O
by	O
punched	O
tapes	O
.	O
</s>
<s>
Both	O
input	O
and	O
output	O
were	O
in	O
decimal	O
numbers	O
,	O
and	O
it	O
used	O
floating-point	B-Algorithm
arithmetic	I-Algorithm
.	O
</s>
<s>
The	O
Z11	B-Device
was	O
first	O
presented	O
on	O
the	O
Hannover	O
Messe	O
in	O
1957	O
.	O
</s>
<s>
Today	O
the	O
German	O
Museum	O
of	O
Technology	O
and	O
the	O
Museum	O
of	O
Technology	O
in	O
Vienna	O
exhibit	O
one	O
of	O
the	O
surviving	O
Z11s	B-Device
.	O
</s>
