A signal generator is an electronic device that produces specific waveforms, such as sine, square, or triangular waves. These waveforms are used in various applications, including testing and troubleshooting electronic equipment, simulating signals in communication systems, and generating audio tones. Signal generators can vary in complexity, from simple analog devices to advanced digital models that can create a wide range of frequencies and modulations. In addition to their use in laboratories, signal generators are essential in the development of technologies like radio transmitters and telecommunication systems. They help engineers and technicians ensure that devices operate correctly by providing a reliable source of test signals. This capability is crucial for maintaining the performance and quality of electronic systems.