Yes, you need one screen per user, and wouldn't it be more efficient if that screen showed both television and Internet? As it stands, you need TWO screens per user.
Only if all the screens are driven by one powerful computer or each driven separately by two very cheap computers. If they're not, then you have two sets of computer guts, rapidly sliding toward obsolescence and replacement.
In either case you've replaced two screens, one a large, cheap, low-res TV screen, and the other a smaller (19"-, probably), expensive, high-res computer screen, with one large, very-expensive, high-res combo screen that will be under-utilized until HDTV is realized. Do people really want to do word processing or read SI on a 52" 16:9 HDTV screen, or watch TV on a 19" computer monitor? |