This week on Yahoo! Tech Tuesday, the topic is on the transition to digital TV from analog, a mandatory move that will be in place when 2006 ends. If you have an analog TV and you turned it on in 2007, you will not be able to see anything unless you have a separate digital-to-analog converter. Not even if you have rabbit ear antenna to receive off-air broadcasts, because even off-air channels will be digital. Yahoo! Tech Tuesday gives some recommendations on which TVs you will need to buy if you don't want to use the old boxy machines in place of the new flat-panel LCD/plasma TV/monitors out there. Goodbye, VHF. Goodbye, UHF. Hello DTV. And to HDTV: Hi, you are so beautiful, with your large resolution, so let's get married.
Some comparisons between analog and digital TV are listed below:
Analog
- 480 horizontal lines
- 68 off-air channels (2-69)
- 124 cable channels (2-125)
- subject to interference - snow, leaked signal, blurry picture
Digital
- up to 1080 horizontal lines
- practically unlimited channels, depending on provider
- HDTV - high definition picture and sound
- subject to copy protection, something that analog TV had advantage over with VHS tapes
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