<s>
EDSAC	B-Device
2	I-Device
was	O
an	O
early	O
computer	O
(	O
operational	O
in	O
1958	O
)	O
,	O
the	O
successor	O
to	O
the	O
Electronic	B-Device
Delay	I-Device
Storage	I-Device
Automatic	I-Device
Calculator	I-Device
(	O
EDSAC	B-Device
)	O
.	O
</s>
<s>
It	O
was	O
the	O
first	O
computer	O
to	O
have	O
a	O
microprogrammed	B-Device
control	B-General_Concept
unit	I-General_Concept
and	O
a	O
bit-slice	B-General_Concept
hardware	O
architecture	O
.	O
</s>
<s>
Calculations	O
about	O
elliptic	O
curves	O
performed	O
on	O
EDSAC-2	O
in	O
the	O
early	O
1960s	O
led	O
to	O
the	O
Birch	O
and	O
Swinnerton-Dyer	O
conjecture	O
,	O
a	O
Millennium	O
Prize	O
Problem	O
,	O
unsolved	O
as	O
of	O
2022	O
.	O
</s>
<s>
Frederick	O
Vine	O
and	O
Drummond	O
Matthews	O
used	O
EDSAC	B-Device
2	I-Device
to	O
generate	O
a	O
seafloor	O
magnetic	O
anomaly	O
map	O
from	O
data	O
collected	O
in	O
the	O
Indian	O
Ocean	O
by	O
H.M.S.	O
</s>
