When the radio was first invented it became a common notion that it will be the invention of the century. But with the passage of time it was found that the availability of only audio signals were not enough for having sufficient entertainment. Then came out the solution as video transmission along with audio. The early television sets were a great news and a perfect mode of entertainment. The only problem was of the analog signals which actually reduced the clarity of the voice as well as the picture quality. So to end up all the problems the Digital TV was invented.
This technology is divided into two parts out of which the SDTV or standard definition TV came in the market first. With them the world started having the high quality sound and picture which was surely the most needed feature. These standards were maintained for a long time but then the need of enhanced versions increased. So this is the reason that the high definition picture quality came into existence. The HDTV actually reduced the difference between the real images and the picture quality at the screen.
With this the size of the screen increased and the size of the television set decreased in thickness. Gradually the slim TVs came into existence and then the LCD screen soon took over. Presently there is a large variety of television sets available in the present market. All that you need is to make a better choice. The screen resolution may be a criteria. This depends on how wide is the room and for what purpose do you need it. Apart from this the major criteria may be the aspect ratio or the colour depth. This depends on the need between movies and video games. For gaming obviously you will need digital TV that has a very fast response time and a great colour depth as well. So just get online and choose among the large options of these great devices and have full on entertainment.