How do currency note-counting machines function?

Asked Jan 1, 2014· 1 answer
Faisal KhanAnswered Jan 1, 2014
It uses a mechanical sifter to lift the notes (with a rubber lifter) and push it forward. This lifting and pushing forward disrupt a light beam. When ever the beam is disrupted, the counter is incremented by one.

So, it uses a fast repetitive motion to lift the notes, and push them forward, and the light beam disruption sensor keeps a count of the number of times the disruption occurred, yielding the total number of notes counted.
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