Microcontrollers - Electronics has been developing rapidly for many decades, but only certain technologies and inventions have become groundbreaking. The transition from electron tubes to semiconductor diodes and transistors ushered in a technological revolution that resulted in the miniaturisation and increased capabilities of electronic circuits. A key step in this process was the introduction of integrated circuits - first analogue and then digital. It was from these digital chips that microcontrollers evolved, which are now the foundation of almost every device we encounter every day, both in our personal and professional lives.