Hardware interaction refers to the way software communicates with physical components of a computer or device. This includes actions like sending commands to the CPU, accessing memory, or controlling peripherals such as printers and keyboards. The interaction is facilitated through various interfaces and protocols that allow software to manage hardware resources effectively. When a user performs an action, such as clicking a mouse or typing on a keyboard, the software interprets these inputs and sends appropriate signals to the hardware. This process ensures that the device responds correctly, enabling a seamless experience for the user while performing tasks or running applications.