Abstract: Abstract In order to develop a new type of aeroengine control system,a 16 bits single chip computer is used.8098 is specially designed for the speed demand of 16 bits micro controller and the bound condition of 8 bits external bus.It has features of high quality,full function and easy to operate.The system simulation and practical physical simulation test show,that the time response of the digital control system is better than that of hydro pneumatic control system.