Following the presentation of a conceptual framework for computer-based education (CBE), this paper examines the use of one aspect of CBE, computer-managed instruction (CMI), in a Major Appliance Serving Program. The paper begins with definitions and a graphic illustration of CBE and its components and uses, i.e., CMI, tutorial or computer-assisted instruction, drill and practice, interactive instruction, instructional simulation, and inquiry. Next, a description is provided of Moraine Park Technical Institute's Appliance Servicing Program, a competency-based curriculum with multiple entry and exit points throughout the 45-week program, which offers a multiple-instructional approach for each module of instruction. Information is provided on methods of evaluating student progress toward meeting performance objectives and of evaluating the program. Next, the paper examines the uses of the microcomputer in keeping track of student progress, providing immediate feedback to students, grading and record keeping, inventory control and shop management, and testing. Finally, the paper describes the modifications made to the Radio Shack program, "Quick Quiz," for creating exercises and tests for students in the program. Illustrations are presented throughout the paper to provide further information about the competency-based program and the use of microcomputers in the program's management information system. (LAL)