Keyestudio KS4028 Manual page 188

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Find more information about musical notations via this link:
https://en.wikipedia.org/wiki/Numbered_musical_notation
(7) Test Result 2:
After uploading the Test Code 2 to micro:bit main board and powering the
board via the USB cable, the speaker on built-in the Micro:bit board plays
the sound Ode to Joy .
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