A synchronous circuit is a type of digital circuit that operates using a clock signal to coordinate its actions. This clock signal ensures that all parts of the circuit work together in a timed manner, allowing for predictable behavior. The circuit changes its state only at specific moments, usually on the rising or falling edge of the clock signal. In synchronous circuits, components like flip-flops and registers are commonly used to store and process data. Because of the clock's role, these circuits can be easier to design and analyze compared to asynchronous circuits, which do not rely on a clock signal for operation.