本程序描述了实现函数y=ax+b（a和b 都为小于1的8bit小数）的硬件电路描述，最后得到的结果只取了整数部分，为8 bit输出，并且对小数部分四舍五入了。-This procedure describes the implementation function y = ax+b (a and b are less than 1 8bit decimal) descr iption of the hardware circuit, the final result just take the integer part, for the 8 bit output, and for rounding the fractional part.