Figure 5. Entropy of the estimated probability distribution over clocks for two Nomon applications.

Entropy is shown as a function of clicks remaining to selection. Each solid line represents a single selection process. Dotted lines decreasing to zero at respective rates of (lower) and (upper) bits per click are illustrated for reference. Left: 25 selections on the Nomon Keyboard: 30 clocks, non-trivial prior , clock period seconds, switch input from joystick button. Right: 25 selections on another Nomon application: 401 clocks, uniform prior , clock period seconds, switch input from space bar. Data was generated by the experienced user (TB).