a homework question

来源: cutecat123 于 2008-02-16 11:17:56 [] [旧帖] [给我悄悄话] 阅读数 : (162 bytes)

In a modem constellation diagram, there are data points at the following coordinates: (1,1), (1, -1), (-1, 1), and (-1, -1). How many bits we have here? THANKS!!!

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