What is clock and what are the functions of clock generator?

A clock is a device that measures and indicates time, typically using a consistent oscillation or periodic signal. In electronics, a clock generator produces a timing signal or clock pulse used to synchronize operations in digital circuits. The main functions of a clock generator include establishing a timing reference for data processing, coordinating the operation of components within a system, and ensuring that signals are sent and received at the correct intervals to maintain system stability and performance.