a homework question

來源: 於 2008-02-16 11:17:56 [舊帖] [給我悄悄話] 本文已被閱讀：次

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!!!