标量处理器是最简单的一类计算机处理器。此类处理器在同一时间内只处理一条数据，如整数或者浮点数。相对之下，并行矢量处理机在单一指令下可同时进行多项运算。

• 并行矢量处理机

Scalar processors represent a class of computer processors. A scalar processor processes only one datum at a time, with typical data items being integers or floating point numbers). A scalar processor is classified as a SISD processor (Single Instructions, Single Data) in Flynn's taxonomy.