A.9235 B.3457 C.8345 D. 6235
A.0∽256 B.-256∽0 C.-127∽+127 D.-128∽+127
A.00110101 B.10110101 C.01001010 D. 11001010
A.10101010 B.01001010 C.10110101 D.00110101
A.00110101 B.10110101 C.11001011 D. 10011011
A.11001010 B.10101101 C.00110101 D. 11001011