What is an application of a digital clock in electronics?

A digital clock primarily functions to keep time, and it utilizes binary counters and flip-flops to achieve this. In digital electronics, timekeeping can be accomplished through various digital components that increment and count time intervals. Binary counters, which are designed to count in binary rather than decimal, are essential for this purpose, as they can efficiently handle the counting process in digital circuits.

In a digital clock, the internal timekeeping mechanism relies on flip-flops to store and manage each binary state necessary for representing the time. These flip-flops change state based on clock pulses that dictate when to increment the counters that represent seconds, minutes, and hours. The accurate functioning of this system allows for precise timekeeping, which is crucial in various electronic devices.

While other applications mentioned in the choices have their purposes in electronics, they do not relate directly to the fundamental operation of a digital clock. Hence, the utilization of binary counters and flip-flops in a digital clock makes this option the most appropriate answer for the application of digital clocks in electronics.