: Why are computers limited to 0s and 1s? Why can’t we use numbers like 2s and 3s for more Efficiency?
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They do. 100 Megabit Ethernet uses three voltage levels on the cable to transmit information. Gigabit Ethernet uses five levels. This was done because they wanted to attain faster speeds using the same cables as older slower Ethernet versions. But it turned out to be less efficient because they had to add a bunch of error correction overhead to prevent reading the voltages wrong.
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