A micro-circuit refers to small electronic components found in various electronic devices. Apart from micro-circuit, there are several synonyms that can be used to describe these small electronic parts. One term is microchip, which is a common term used to describe integrated circuits. Another synonymous term is microprocessor, which refers to the central processing unit (CPU) used in computers and other electronic devices. You may also hear the term microcontroller, which is a small computer on a single chip used to control electronic devices. Furthermore, the term semiconductors is also a synonym for microcircuits, as these components are made of materials that conduct electricity only under certain conditions.