<s>
The	O
IBM	B-Device
6400	I-Device
Accounting	I-Device
Machine	I-Device
is	O
a	O
series	O
of	O
four	O
calculating	O
and	O
accounting	O
machines	O
produced	O
by	O
the	O
IBM	O
Electric	O
Typewriter	O
(	O
ET	O
)	O
division	O
in	O
1962	O
.	O
</s>
<s>
Calculations	O
are	O
done	O
by	O
electronics	O
(	O
SMS	B-Device
)	O
and	O
program	O
steps	O
are	O
controlled	O
by	O
relays	O
.	O
</s>
<s>
The	O
IBM	B-Device
6405	I-Device
is	O
a	O
desk-size	O
calculator	B-Application
,	O
and	O
the	O
6410	O
,	O
6420	O
,	O
and	O
6430	O
are	O
more	O
advanced	O
accounting	O
machines	O
.	O
</s>
<s>
In	O
1968	O
an	O
IBM	B-Device
6430	I-Device
was	O
developed	O
in	O
Don	O
Mills	O
.	O
</s>
<s>
The	O
programming	O
was	O
done	O
on	O
cards	O
and	O
the	O
programs	O
steps	O
were	O
controlled	O
by	O
electronics	O
(	O
SMS	B-Device
)	O
.	O
</s>
