<s>
The	O
Mallock	B-Device
machine	I-Device
is	O
an	O
electrical	O
analog	O
computer	O
built	O
in	O
1933	O
to	O
solve	O
simultaneous	O
linear	O
differential	O
equations	O
.	O
</s>
<s>
The	O
Mallock	B-Device
machine	I-Device
was	O
contemporary	O
with	O
the	O
mechanical	O
differential	B-Device
analyser	I-Device
,	O
which	O
was	O
also	O
used	O
at	O
Cambridge	O
during	O
the	O
late	O
1930s	O
and	O
1940s	O
.	O
</s>
