Ordinary display can be a TV and watch it?

Users questions: CRT monitors and LCD displays, there is no built-in audio-visual and need to be when the TV to see what equipment? CCTV is watching cable access, it seems right need TV box, there are active video, there was no host and the host can see the way? I feel pretty on the recording of television programs to your hard drive On, there are other times more than the LCD can be brought when the TV to see, the best you can remote control, and what equipment I need? How much of this equipment?
Experts answer: to buy a external TV card (which can take cable TV, and good points can also be video capture, low entry price, the installation do not open Chassis, 150 ~ 300), an external TV card is almost like a cat and ADSL. Some of the products support boot-free TV, but the price to be expensive.
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