<s>
Mechanical	B-Device
counters	I-Device
are	O
digital	O
counters	O
built	O
using	O
mechanical	O
components	O
.	O
</s>
<s>
Mechanical	B-Device
counters	I-Device
can	O
be	O
made	O
into	O
electromechanical	O
counters	O
,	O
that	O
count	O
electrical	O
impulses	O
,	O
by	O
adding	O
a	O
small	O
solenoid	B-Algorithm
.	O
</s>
<s>
Mechanical	B-Device
counter	I-Device
were	O
used	O
to	O
accumulate	O
totals	O
in	O
tabulating	O
machines	O
that	O
pioneered	O
the	O
data	O
processing	O
industry	O
.	O
</s>
