Device Driver (Required to make a device function)
The DRV file extension is associated with device driver files.
A device driver is a program that interacts with a particular device and contains knowledge about the device that programs using the driver need. A device driver converts the operating system's general input/output instructions into messages that the device type can understand. The DRV file contains the information required to do so.
A driver is often packaged as a dynamic link library (DLL) file.
Learn more about DRV files:
See driver FAQs on IT Knowledge Exchange.
Read about 'The art of locating device drivers for Windows computers.'
Serdar Yegulalp explains installing device drivers on Windows 7.
DriverGuide.com provides many printer and other device drivers for downloading.