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A device driver is software that allows hardware devices to operate the way they should. For example, a printer driver tells the printer what to do and how to do it. It confirms the connection between the device and the computer itself that allows the computer user to do those things he expects the device to do.
All laptops are comprised of numerous parts, but the LCD inverter plays an especially important role. The inverter is one of several key parts within a laptop's display; it helps to illuminate the screen.urpose. Normally, a notebook's screen will display windows and other user-controlled elements. But without a backlight, the viewing experience would be similar to looking at a film reel without a projector. The inverter allows for the laptop's display to be lit by providing power to the screen's backlight.