Abstract: This microcomputer system can be used, for example, in a regulator for internal combustion engines for controlling and regulating the fuel injection and other functions in a motor vehicle in dependence on operating magnitudes. Exemplary controlled functions include engine revolutions, charging pressure, gas pedal position, etc. The controlled functions are determined with the aid of sensors connected with the microcomputer system. The outputs of the microcomputer are connected with servo members, signal displays or the like, which may be energized by drive circuits. The system functions are distributed over the individual microcomputers (1, 2, 3), and a parameter storer (5) is provided for, for example, motor-specific and vehicle-specific data.