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A digital computer was used to control an augmented turbofan engine and its inlet on a supersonic fighter. A brief summary of the system configuration and performance provides the background for remarks on the development of the system. Throughout the program a free flowing interchange of ideas, design, and test data was maintained among three major contractors and three Government facilities, aiding in the integration process. Particular emphasis is placed on: The role of simulation in system development, Software development and configuration control, Adaptation of the propulsion control system to a series of test facilities. Based on the experience acquired in the successful completion of the program, conclusions relevant to future engine/airframe development are drawn -- digital electronic engine controls are practical and essential for the fully integrated aircraft of the future.