Integrated Circuit (IC) is a circuit that integrates multiple electronic devices (such as transistors, capacitors, resistors, etc.) on a semiconductor chip. It has the following functions and functions: 

Amplified signals: Integrated circuits can amplify weak signals to appropriate signal levels for further processing or control. 

Logic operations: Integrated circuits can implement logic operations, such as AND gates, OR gates, NOT gates, etc., for processing and controlling digital signals. 

Enhanced signal: Integrated circuits can enhance electrical signals to have higher voltage, current or power to meet specific application requirements. 

Memory storage: Integrated circuits can implement memory functions, such as static random access memory (SRAM), dynamic random access memory (DRAM), etc., for storing and reading data.