比如add sub substract adc add with carry sbb substract with borrow inc increase dec decrease cmp compare imul integer multiplication idiv integer divide aaa ASCII add with adjust二算术运算指令比如add sub substract adc add with carry sbb substract with borrow inc increase dec decrease cmp compare imul integer multiplication idiv integer divide aaa ASCII add with adjust等都是算术运算指令这些指令实现寄存器和内存中的数据运算.它们的执行结果影响标志寄存器的sf zf of cf pf af位.三逻辑指令比如and or not xor exclusive or test shl shift