将下列数字转换成相应的数字系统。

57 = 32+16+8+1 0.625 = 0.5+0.125(110001.101)B

然后,一组四位71。转换为三位的八进制组。

(57.625)D =(1110001.101)B =(71。A )H

(1010111001)B =(1271)O =(2b 9)H

(101011.11011)B =(53.66)O =(2B。D8 )H