<s>
This	O
function	O
was	O
key	O
to	O
the	O
RCA	O
attempt	O
to	O
produce	O
a	O
non-analog	O
computer	O
based	O
fire-control	B-Application
system	I-Application
for	O
use	O
in	O
artillery	O
aiming	O
during	O
WWII	O
.	O
</s>
<s>
A	O
simple	O
way	O
to	O
describe	O
the	O
physically	O
complex	O
Computron	O
is	O
to	O
begin	O
with	O
a	O
cathode	B-Device
ray	I-Device
tube	I-Device
structure	O
in	O
the	O
form	O
of	O
a	O
right-circular	O
cylinder	O
with	O
a	O
central	O
vertical	O
cathode	O
structure	O
.	O
</s>
<s>
The	O
Computron	O
was	O
a	O
complex	O
cathode	B-Device
ray	I-Device
tube	I-Device
while	O
the	O
Additron	O
was	O
a	O
triode	O
with	O
multiple	O
grids	O
and	O
targets	O
.	O
</s>
