Super-scalar CPUs add the possibility to issue more then one instruction per cycle. As long as these instructions are independent, each of them is dispatched into one of several parallel pipelines. Therefore, a super-scalar CPU can achieve an IPC (Instructions Per Cycle) higher than 1.
===ALU 算术逻辑单元ALU (Arithmetic Logic Unit )===
Bitwise logical operations对两个储存于暂存器的数字进行add，subtract，multiply，divide,将结果放到一个暂存器内。
执行位操作，藉对两组数字（为两串的数字，都由零与一构成，分别储存于两个暂存器内）执行逻辑与和逻辑或，或者对寄存器的每一位执行逻辑非操作；（Bitwise logical operations or Bitwise shift operationsoperations）
比较两个寄存器中的数据（例如是大于或者相等）；
===SIMD (Single instruction multiple data )===