A section of semiconductor wafer with circuitry and components etched into the top. Also called a die or chip.

a microelectronic computer circuit incorporated into a chip or semiconductor; a whole system rather than a single component

A "monolithic integrated circuit" or "multichip integrated circuit" containing an arithmetic logic unit (ALU) capable of executing a series of general purpose instructions from an external storage. N.B.1: The "microprocessor microcircuit" normally does not contain integral user-accessible storage, although storage present on-the-chip may be used in performing its logic function. N.B.2: This definition includes chip sets which are designed to operate together to provide the function of a "microprocessor microcircuit".

an electronic component in its own right which is designed to perform a particular function