计算机中，解释并执行指令的一种功能单元。注：处理器至少包含有一个指令控制器和一个算术与逻辑运算器。

In a computer, a functional unit that interprets and executes instructions. Note: a processor consists of at least an instruction control unit and an arithmetic and logic unit.

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现在让我们来看看在顶点着色运算器中这些寄存器和指令如何被典型的运用。

Now let's see how these registers and instructions are typically used in the vertex shader ALU .

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执行过程中的一个阶段所需的时间，在此期间，计算机从主存储器中取出指令或操作数，并将其存入控制器或运算器的寄存器中。

The part of execution in which an operand or instruction is read from main storage and written into a control unit or arithmetic unit register.

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