What is the function of the system clock in a computer?

The function of the system clock in a computer is to generate electrical pulses that synchronize the operations of various components within the system. The system clock provides a timing signal which ensures that all parts of the computer can operate in harmony, coordinating the speed at which instructions are executed and data is processed. Each pulse from the clock represents a cycle, and most operations within the CPU (central processing unit) and other components rely on these timing signals to function correctly. This synchronization is crucial for maintaining the order of operations and allowing different parts of the computer to communicate effectively.

The other options do not accurately describe the role of the system clock. For instance, while power supply regulation and data transfer speed are important aspects of a computer's operation, they are governed by different components and mechanisms, such as power management circuits and network interfaces, respectively. Additionally, storage capacity is determined by the hardware specification of memory components, not by the system clock.