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"Bits" are the smallest whole units that can be sent back and forth on a network or stored on a computer. Think of bits as being one piece of information and you'll get the idea. But when you're connected to the Internet, these bits don't stay long enough to leave much of an impression. Speed is what matters. The time it takes for a bit to go from your computer to mine is your computer's "throughput."
And how fast can that throughput be?
Stop the Car! Your 56k modem doesn't push those bits out and pull them in at 56k. It does it much faster. And much slower. Either-or. And you don't get a say in the matter.
And the same holds true for the other modem speeds as well. If you have a 33.6k modem, it's movin' along at different speeds than you might think.
The second thing to effect the speed of the transfer is compression of data. It turns long documents into short ones, big files into small ones. Files that are already compressed, like a .zip file won't be touched. But anything with a lot of empty space in it will be squeezed into a fraction of the space it used to take up. A file that was 300 kilobytes might be compressed down to 75 kilobytes.
Now consider that 300 kilobyte file. Squeeze it to 75 kilobytes and send it at the SAME speed as before and it gets there in 1/4 th the time. It gets there four times as fast. So that 56k modem might be considered a 224k modem if it's compressing everything the best that it can. And that 33.6k modem might be considered a 134.4k modem. You get the idea. |
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