Hearing a Binary Counter
Each of the bits in a binary number has been assigned to a different note. When the binary number is incremented or decremented, we play a note for each bit that is 1.
To do:
 Hit the +1 button.
 Notice how bit 0 becomes 1 so that the decimal number is 1.
 Hear the lowest frequency corresponding to bit 0. (You may not be able to hear the lowest note if you are listening to the speakers on a laptop computer. Try using headphones or external speakers.)
 Hit +1 again.
 Notice how bit 1 becomes 1 so that the decimal number is 2.
 Hear the next lowest frequency corresponding to bit 1.
 Hit +1 again.
 Notice how bit 0 and 1 are both 1 so that the decimal number is 2 + 1 = 3.
 Check the autoCount box and watch it count.
