What is the main function of operational amplifiers?

Operational amplifiers are primarily designed to perform mathematical operations on signals. These versatile components can add, subtract, integrate, and differentiate analog signals, making them essential in analog circuits for signal processing. The operational amplifier operates based on the differential input voltage, where it amplifies the difference between its two input terminals, enabling complex calculations and signal modifications to be carried out effectively.

While storage of electric charge, voltage regulation, and logic gating are important functions in various types of electronic components, they do not encapsulate the fundamental purpose of operational amplifiers. Their ability to execute mathematical functions makes them invaluable in applications such as audio equipment, control systems, and instrumentation, where precise signal manipulation is crucial.