A microprocessor chip, commonly known as a computer chip or CPU, is an essential component of modern electronic devices. Synonyms for a microprocessor chip include integrated circuit, microcontroller, processor, and central processing unit. Integrated circuits, or ICs, are silicon chips that contain miniaturized electronic circuits, including microprocessors. A microcontroller is a small computer on a single chip that controls the functions of small electronic devices. A processor refers to a microchip that performs instructions and calculations. Finally, the central processing unit or CPU is the main chip in a computer that performs most of the processing tasks. All of these synonyms for microprocessor chips are interchangeable depending on context and usage.