解移码加减法。相关知识点: 试题来源: 解析 X=(-69)10=(-1000101)2 Y=(+57)10=(+111001)2 采用8位机器数(N=7) [X]补 = 10111011 [X]移 = 00111011 [Y]补 = 00111001 [Y]移 = 10111001 [X+Y]移 = [X]移+[Y]补 = 00111011+00111001 = 000111011+000111001 = 001110100 [X+Y]补 =...