Older TV can receive digital cable although they may not display in HD
All digital TV's will natively support digital cable, but most CRT TV's will not.
I expect you are making reference to the antenna on your roof. If so, yes. An old antenna can be used for digital TVs.
IO digital cable is not an AV cable, but it is the former name of digital cable television now called Optimum TV. It is a service offered by Cablevision in the New York vicinity.
Yes and depending on your television (if it is digital or not) after 2009 as well
A Motorola digital cable box is used to changed an analog television to digital viewing. The cable box needs to be connected to a receiver such as a roof antenna and then to the television. The television then has to scan the box to locate signals that it can receive.
You need a converter box connected to your own antenna or subscribe to cable or a satellite service.
In august of 2011 local Canadien television will be switching from local over the air cable to digital cable. The best way for one to obtain a digital tv box would be to contact a local cable or satellite provider in the area you are located and request a digital tv box.
The difference between digital cable TV and regular cable TV is the quality of the video stream that is being presented on the TV screen. A digital cable will provide a better quality picture, usually with a larger framerate and bitrate and as such these will look better on a larger TV.
If his TV is cable ready and your cable company offers basic cable with out a cable box then just use a cable rated splitter and run the cable to his TV without a box he will only get basic and probably advanced basic. You need a cable box or a TV with a built in decoder to get digital signals.
Yes
It does have a digital tuner built in. This LCD TV has a built in digital tuner,so you can receive all digital broadcast.
You probably won't need to get new televisions, and at worst would need to purchase a digital converter box for roughly fifty dollars.