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.
In very simple terms, drivers are computer programs that let Windows and your other applications interact with a hardware device. Your computer doesnât natively know how to use all the features of your video cardâit needs a driver to do that.Just like computer programs have updates and service packs to fix bugs and add features, drivers do as well. Video Card: The difference in speed between the generic Windows drivers for your video card and the official NVidia or ATI/AMD drivers will surprise you. 2  Even if you arenât a gamer, make sure you have the real drivers.