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???B?2???????1010?2??1010?B?

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??????????????????????8??????0~7???

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???O?8????????1010?8??1010?O?

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???D?10????????????1010?10??1010?D?1010?

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???????????????????????????16??????0?1?2?3?4?5?6?7?8?9?A?B?C?D?E?F???

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???16??????0?1?2?3?4?5?6?7?8?9?A?B?C?D?E?F???

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???H?16?0X????????1010?16??1010?H?0X1010?

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????????????2??????????2??????0?????????????????????????????125=1111101B

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?????????????1?????0?????????????????????125?D=?0111110?B

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??????????????2^k?????????????????1010?B=2^3 + 2^1 = 8 + 2 = 10

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?????????????????????????????????????????????????????????????2?????1011100101?2???8???001 011 100 101?=?1345?8

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???????????????????????????????????????????????????????????????2?????1011100101?2???16???0010 1110 0101?=?2E5?16

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????????????????????????????????????????????8?????456?8???16???456?8=?12E?H

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00000000 = 0

00000001 = 1

00000010 = 2

00000100 = 4

00000101 = 5

00000110 = 6

00000111 = 7

00001000 = 8

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