The document describes a microcontroller-based missile tracking and automatic destruction system. It uses an ultrasonic transducer to detect missiles and a stepper motor to aim and fire at the target. The system architecture includes an Arduino Uno microcontroller, ultrasonic sensor, stepper motors, LCD display and other components. It works by detecting missiles with ultrasonic waves, then activating destruction systems using the microcontroller to aim and fire at the target. Such a system could be applied in defense to automatically protect countries from foreign missile assaults.