Abstract: A peripheral control device applicable in robotics for control of educational robots operated by stepper motors performs reliably positioning tasks of a great number of steps with a great number of axes controlled with different velocity and realizes, by means of digital inputs and outputs, a reliable connection with the technological equipment with minimum participation of the microprocessor which controls it. The device is controlled by a microprocessor and contains a buffer for addresses, a second buffer for control signals, a bidirectional buffer for data, a decoder, a register for digital inputs, a second register for digital outputs, a third register for availabilities, a fourth register for directions, a fifth register for movements, and a sixth register for the control of a programmable counter. The programmable counter sets the rotation velocities of the stepper motors.