将下列余3码转换成十进制数和2421码(1) (011010000011)、(2) (01000101.1001)

(1)(011010000011)余3码=(0110 1000 0011)余3码=(0011 0101 0000)二=((3*16+5)*16+0)十=(848)十
(2)(01000101.1001)余3码=(0100 0101. 1001)余3码=(0001 0010. 0110)二=(18.375)十