The numerical control GS-DSA is a microprocessor system made for positioning control and for the automatisms connected to it, provided of two incremental encoders inputs, contains a C.C. Motor driver and the I/O necessary for the complete management of one axle machine, with the possibility of the position control through a transductor installed at the end of the mechanical transmission. Unbeatable device for price-performance ratio when the controllable motor power is manageable by its driver. Possible to control 2 axles with C.C. motors external commutation.