This script contains instructions and animation for learning to count in binary on your fingers.
The thumb is used as the least-significant digit, since it has to move the fastest when counting. A left hand is displayed, to put the least-significant bit on the right where it is most expected.
Of course, when counting on real hands you should use your dominant hand for counting the low-order 5 bits.
space for instructions
up and down arrows to count up and down
r to reset to display screen
c to count up automatically