posted 15 years ago
Regarding HDTV, there are two commonly-used resolutions: 720p is 1280x720, and 1080p is 1920x1080. Hook your PC to one of those and that will be your desktop's resolution. Of course, if you have a 50" screen, you will probably need a wireless keyboard/mouse because you will have to sit quite a ways away from it (desktop use is out of the question!).
Regarding SD TV: the projector you used probably had either 800x600 or 1024x768 resolution (I usually run into the later). A SD TV has 640x480 resolution (actually, I think it is really 320x240 with some interpolation that gets you 640x480, at least that what I recall from ages ago when I was using an Atari 800 and learning how to do sprite programming and read a series of articles that described how TVs worked and thus how to do smooth animation - it involved knowing the number of clock cycles for each 6502 processor opcode and how many clock cycles there were in a vertical and horizontal reset). Personally, I would pay for an LCD monitor, even decent ones have come down to reasonable prices.