A CAI computer program typically instructs the student in how to use the system, presents a lesson on a selected topic, and administers a followup exam. CAI components are hardware (terminal, keyboard, printer, cables, and other equipment); software, which instructs the computer in what to do and how to do it; and program development, which involves staff's determining what the CAI program will cover and how the information will be presented. Benefits of CAI are more productive use of training time; flexibility in training times, class size, and program content; efficient use of class preparation time; and consistent presentation of material. Initial use of CAI by students requires supervision and instruction in the use of the system. CAI should be used in combination with other instruction methods, such as films, videotapes, role playing, and traditional class sessions.