At 09:15 AM 5/7/2003 -0700, Tal wrote:
>As you mentioned, one way is to count the pulses within a fixed time
>period. The other is to measure the time it take to receive a fixed
>number of pulses.

The time between two pulses, plus the width of the pulses, is all you need.
You know the number of pulses in a revolution.
1 rpm would give you a period of 60/N seconds, where N is the number of
pulses in a rev.

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