A physical processor is organized as different execution units at the hardware level, for example, fixed point and floating point operation units.

在硬件级别中，物理处理器是作为不同的执行单元进行组织的，例如定点和浮点操作单元。

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Extracodes may be used to provide floating-point operations, for example, on a machine which does not have floating-point hardware.

例如，如果一台机器没有浮点硬件，则可以用附加程序来提供浮点操作。

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Compared with the floating-point computing method, the shift-add operation is simpler, and can be implemented easily by VLSI, which enables the real-time image processing to be realized by hardware.

相对于浮点计算法，移位-加操作最大的优点是计算简单，特别易于超大规模集成电路实现，因而使硬件实时处理图像信号成为可能。

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