There's a rule in communications (Shannon Hartley) that says the amount of information a signal can carry is related to it's bandwidth (frequency). The higher the bandwidth of the signal, the more bits per second that can be packed in. That was the limitation for telephone modems. You could never do even 1 mega bit per second on one. Too low a bandwidth. For Bolivar; your digital signals eventually become modulated waves that make broadband, wireless and cable and DSL work. The waves are then demodukated to recreaqte the digital data
2007-06-14 13:17:10
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answer #1
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answered by Gene 7
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Wht do you mean by waves? Computers use high speed digital transmission of data for speed of computations. The higher the speed or data rate, the faster the computations can be completed. The data conisist of digital words that comprise 32 or 64 bits of 1 or 0 data. The faster these data words can be moved through the computing process, the better it is for efficiency.
2007-06-14 20:04:11
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answer #2
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answered by Matt D 6
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If you mean radio waves, the very low frequencies are hard to transmit. They need very long antennas. Shorter antennas can be used but they are not efficient at all.
The limited data rate, that the other answers discuss, are also valid reasons.
2007-06-14 20:09:45
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answer #3
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answered by Anonymous
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You can't send fewer bits than there are waves. Low-frequency waves have fewer waves per unit time. High-frequency waves give you MUCH more option in how much data you can transmit in a given amount of time.
2007-06-14 19:58:13
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answer #4
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answered by engineer01 5
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They're slow.
Who wants a slow computer?
2007-06-14 20:25:40
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answer #5
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answered by Anonymous
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