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.
1 Official Pc Device Driver. 2  Free Download: Pc Device Driver. 3  A device driver is something that many PC users have heard of, yet do not have a clear sense of exactly what they do. In essence, a device driver helps your computer communicate with (or drive) devices. It is essentially a way of translating between the programs and applications your computer runs and the actual devices (both internal and external) that your PC uses to run those programs. Think of it as a translator.