In many designs the ALU also takes or generates as inputs or outputs a set of condition codes from or to a status register.

• 在许多设计中，ALU从一个状态寄存器中取出一组条件代码做为输入，或产生一组条件代码并输出到状态寄存器。这些代码被用来指出诸如，进位，退位，溢出，被零除，等等状况。