The Bt878 TV Card - TV Tuner Windows driver is a device driver used for TV tuner cards based on the Brooktree Bt878 chip. The Bt878 is a popular chip used in many analog TV tuner cards, which allows your computer to receive television signals and display TV channels on your monitor. The driver ensures that the TV tuner card communicates properly with the Windows operating system, enabling you to watch television, record shows, and access other features of the card.

If you're using a TV tuner card that uses the Bt878 chip (common in older TV tuner devices), you need to install the appropriate driver so your Windows PC can recognize and interact with the hardware.