I am going to be explaining the basic differences that we come across in our daily lives, which includes

SDTV is basically an analog square box which first came and used the resolution of 4:3. SDTVs were big and bulky giant boxes but with the square image inside it. And now we have something what we call an HDTV which uses the resolution size 16:9 which is more than a Standard TV. It is a wide screen display of image which is rectangular in shape unlike our SDTVs and has more like a cinema look. * Now since older TV sets used 4:3 ratio there is a huge difference in the quality of picture we r looking at. We notice at times when we watch an old movie on our new sets of TV or HDTV we end up getting an empty bars around or at the top. They are called Pillar boxing or line boxing and that space will remain there until and unless we go to our tv settings and change resolution from 4:3 to 16:9. Now that the image is zoomed we find that empty space no more. This is all trying to show us the true aspect of the older version of the TV from 4:3 resolution on a new monitor that uses 16:9 ratio.

* We get a bright sharp image where we can see even the smallest details very clearly and gives less trouble to eyes in an HDTV whereas the picture is not so clear one in Standard TV. It is less bright and sharp.

HDMI stands for high definition multimedia interface, its standard for connecting high definition video, audio devices. Around the time HDTV came about it was time for digital Revelation. What better way to do this is to consolidate all connector into a single connector enter the HDMI cable. So how does that work? Through an HDMI cable a transfer uncompressed video data and compressed or uncompressed digital video data to something that opens video or audio, so if you have a computer monitor, TV, projector or digital audio device like a receiver you are likely using an HDMI cable. HDMI production started in late 2003 for consumer use so it's been around for over 10 years UHD, this brought support for 4k video at 60 FPS, 32 audio channel support and 21 by 9 aspect ratio support for a wide angle theatre experience. There are also three HDMI cable connector’s types, HDMI, Many HDMI and micro HDMI. Full size HDMI as we mentioned before are used for TVs and revisers. Mini HDMI is used for video recording devices. Finally micro HDMI is most likely found in thinks like cellphones where smaller connector is needed to fit into a smaller form factor device. They use less hardware features and are not as bulky as cathode TVs but since they have improved quality and features they are expensive in the other way. Better the quality more the price.

* Off-Air Signals (antennas). (n.d.). Retrieved April 9, 2015, from http://www.kenrockwell.com/hdtv/basics.htm