Someone challenged Magi to a contest. He/she needs to make a sprite know the difference between 1 clap and 2 claps. If you mean claps in real life, I'm not your man. The Pico/Arduino Board or whatever it is your using makes no sense to me whatsoever.
If you mean claps in project, then you could use a variable and 'If' commands. Clap # is equal to the variable, and Forever if: Claps = 1, the sprite knows it equals 1 and does whatever it's supposed to do for one clap. The same thing for 2 claps. You could also use broadcasts, but I don't suggest it. You can add an infinite amount on different things the sprite can do, because you can have an infinite amount of claps play (though I don't recommend it. Infinity is such an unending number, and there would be endless lag if you did it).
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If you mean like differentiating between 1 or 2 claps from the mic it should be something like this: http://scratch.mit.edu/projects/technoguyx/895703 This detects two claps if both are done in less than 0.5 seconds. There's a little glitch though, if you clap twice it says "2 claps!" then "1 clap!" (both broadcasts are broadcasted for some reason, don't use it in your project yet unless you can fix it or make it so the 2-clap broadcast can stop the 1-clap one).
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Instead of broadcasts, you can use variables. The signals won't cross each other then.
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