Quelle: (Newman, Lamming 95).
Exercise
Conduct a Cognitive Walkthrough analysis of performing the
following tasks with the aid of the ticket machine of Figure 1:
(a) travelling as far as possible for $10;
(b) buying a round-trip ticket for $14.55;
(c) after selecting a round-trip ticket to West Wood and depositing $10,
deciding to buy a one-way ticket instead.
Figure 1 Interface design for a rapid-transit ticket machine.
another exercise