Piezo Buzzer and Tone();
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note frequency period timeHigh
c 261 Hz 3830 1915
d 294 Hz 3400 1700
e 329 Hz 3038 1519
f 349 Hz 2864 1432
g 392 Hz 2550 1275
a 440 Hz 2272 1136
b 493 Hz 2028 1014
C 523 Hz 1912 956