AN EXPANDABLE MICROCOMPUTER MULTIFUNCTION VEHICULAR INFORMATION SYSTEM

The features and development of an expandable, microprocessor-based vehicle operator information system (Cadillac's TRIP COMPUTER) are described. Information sensing, software routines, hardening techniques, and display methods are presented - along with photographs of components and block diagrams. Quality controls and field servicing are covered, along with potential future applications of the microprocessor to engine control and vehicle subsystems.