What is a microprocessor commonly defined as?

A microprocessor is commonly defined as an integrated circuit that contains all the functions of a central processing unit (CPU) of a computer. This means that it serves as the primary component responsible for executing instructions and processing data within a computer system. The microprocessor performs essential tasks such as arithmetic calculations, logical operations, control functions, and data management, enabling the overall functionality of the computer.

By integrating these critical functions onto a single chip, microprocessors have revolutionized computing by making devices smaller, more efficient, and cost-effective. They serve as the "brain" of the computer, processing information and coordinating tasks, which is why the correct definition centers on its role as a central processing unit within computing systems.