Types of HCI systems (1)
1. Life-Critical systems
Examples: control of air traffic, nuclear reactor, power utilities, police or fire dispatch, military operation, and medical instruments
Characteristics: High cost, high reliability and efficiency, error free operation, long time training. Subjective satisfaction is not important. Retention is obtained by frequent use of common function.
2. Industrial and commercial uses
Examples: banking, insurance, order entry, inventory management, airline and hotel reservations, car rentals, credit card management, point-of -sales terminals
Characteristics: Cost must be in balance with reliability, speed of performance, and error rate; high cost for training personals, so easy of learning is important; subjective satisfaction is modest importance; retention is obtained by frequent use