A fast-food restaurant has four kinds of employees:
(1) order takers, who take custom- ers’ orders;
(2) cooks, who prepare the food;
(3) packaging specialists, who stuff the food into bags; and
(4) cashiers, who give the bags to customers and take their money.
Each employee can be regarded as a communicating sequential process.
What form of interprocess communication do they use?
Relate this model to processes in UNIX.