EXERCISE i: A CALMER ALARM CLOCK The interaction ow for most alarm clocks is fairly consistent and pre dictable: activate the alarm, set the wake time, receive a status shout at the specified time, hit the snooze button . Most are operated via digital push button, or occasionally rotational knob, but beyond that there's not a lot of variation . This exercise calls that consistency into question, and challenges you to improve on this simple design . Consider the various switches and features of a standard alarm clock, as shown in Figure 4-3