What is a common characteristic of software modules?

Software modules indeed contain specific functions encapsulated within them, which can include firmware in certain contexts. Firmware is a type of software that provides low-level control for a device's specific hardware. Modules, in this sense, can be considered as building blocks that make it easier to manage and update software systems. By modularizing functionalities, developers can implement hardware-specific code in firmware that interacts with the hardware without affecting the entire system's codebase.

This approach enhances maintainability and allows for more focused updates or revisions, as individual software components can be changed independently without interfering with other parts of the system. The structured nature of software modules allows for a clearer organization of functionalities, facilitating both development and troubleshooting processes.