A.0～128
B.-127～+128
C.-128～+127
D.0～255

A.0.1011
B.0.0101
C.1.1011
D.l.0101

A.1tl01101
B.10010011
C.00010011
D.10010010

A.-0.1011
B.-0.0101
C.0.1011
D.O.0101

A.01011
B.1011
C.0101
D.10101

A.1.0010lOl
B.I.0010llO
C.0.0010110
D.0.llO1OlO

A.［x]补各值保持不变
B.［X]符号位变反，其他各位不变
C.［x］补除符号位外，各位变反，末位加1
D.［X-]补连同符号位一起各位变反，末位加1

A.176.5
B.176.25
C.181.25
D.181.5

A.15.625
B.15.5
C.14.625
D.14.5

A.172.5
B.179.3125
C.163.3125
D.188.5

A.21.3
B.84.C
C.24.6
D.84.6