The changing face of television sets People have been watching TV for more than 70 years.Did the TV sets in the 1940s look the same as today's?They were very different,in fact.YVs will also be very different in the future.The future of TV is Digital Television.DTVs have a wider screen than ordinary ones.The screen looks just like that in cinemas.The best things that DTV gives people are clearer pictures and better sound.Pictures on a DTV set are very bright,clear and life-like.The sound is as good as that of a CD.At home you will be able to enjoy watching TV as if you were in a cinema.Sometimes people call it High Definition TV.HDTV is the best DTV.With DTV,people will have a bigger choice of programmes from the same station at the same time.For example,you can choose to watch the news,sports,a sitcom or a children's porgramme on CCTV1 at 7 p.m.You can see DTV sets in some shops now.Most of them ar4e still very expensive but the prices will come down in the future.