A microcontroller based system is interrupt driven such that an LCD interfaced displays MECHATRONICS_2017' during normal operation. Interrupt one: Ten successive 8 bit data stored in memory locations of the controller are serially output to the host computer. Interrupt two: A stepper motor interfaced through a serial interface has its motion varied. Interrupt three: Use Pulse Width Modulation (PWM) Technique to control the motion of a servo motor.