最新计算机组成原理实验指导

accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measuredР实验三、加法器Р理论知识Р一．补码加减运算规那么Р公式：Р　 [X+Y]补=[X]补+[Y]补Р　 [X-Y]补=[X]补+[-Y]补Р例： X=0.101101，Y=-0.110100，求[X+Y]补Р解：Р　　[X]补=0.101101，[Y]补=1.001100Р 　[X+Y]补 = [X]补+[Y]补Р = 0.101101 + 1.001100Р = 1.111001Р溢出及处理：Р补码加减运算可能产生溢出，为判断溢出，采用变形补码形式.Р判断溢出的原那么：以两位符号位表示数的符号。当两符号位不同时，溢出；两符号位相同时，无溢出。无论是否溢出，最高符号位代表真正的符号。Р变形补码的加减法:两个符号位都看作数值位参加运算，最高符号位产生的进位丢掉。