Circuit design is the process of creating electronic circuits that perform specific functions. It involves selecting components like resistors, capacitors, and transistors, and arranging them in a way that allows them to work together effectively. Engineers use software tools to simulate the circuit's behavior before building a physical prototype. The goal of circuit design is to ensure that the circuit operates reliably and efficiently. Designers must consider factors such as power consumption, signal integrity, and component compatibility. Successful circuit design is essential for various applications, including computers, smartphones, and automotive systems.