View full size image. Measured by surface area, the Caspian Sea is the world's largest inland water body. The sea covers roughly 143,200 square miles (371,000 square kilometers) and borders five countries: Iran, Russia, Kazakhstan, Turkmenistan and Azerbaijan.
A logical device driver is a high level abstraction of how a device behaves. A physical device driver is a driver for a specific piece of hardware. The logical device driver talks to the physical device driver for you to keep you abstracted from the underlying hardware. For example, there are many different types of printers, and they typically come with their own drivers.
The Role of Drivers. There are drivers for nearly every type of computer device and peripheral including: 1  Input devices, such as mouse devices. 2  Hard and floppy disk drives and controllers. 3  Multimedia devices, such as microphones, cameras, and recorders. 4  NICs. 5  Printers, plotters, and tape drives.