先将3E1转换为二进制数0011 1110 0001,再将二进制数转化为十进制,结果为993
992
(3E1)16 =(3×16^2+14×16^1+1×16^0)10 =(768+224+1)10 =(993)10
3*16^2+14*16+1=993