说明：  信息论与编码中，实现的一个简单的（7,4）系统线性分组码，也即海明码
(Construct a systematic (7,4) linear block code.You can use c lauguage or HDL (VHDL or Verilog-HDL) to describe it. Construct a linear block decoder,and decode the received code vector[0 1 0 1 1 0 1].Please write the detail of how to realize it in computer lauguage.And list the program lines.)