This lecture introduces the world of microcontrollers, explaining their role as the brains behind various devices and systems. The instructors, Jean-Danielle Nicou and Pierre-Yves Rochard, share their extensive experience in teaching microcontrollers and developing practical applications, offering exercises, assignments, and real-world examples to help students grasp the fundamentals of programming in C and mastering input/output operations, specialized registers, and other key concepts.