在数值处理方面，类比数位转换器(ADC)之 无号数 ( unsigned number )被转换为有号数(signed number)，乘法运算以暂存器的移位来取代之，另建构一运算机制来防止溢位的产生。
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有一种使零部件标准化并减少型号数量的需求。
There is a drive both to standardize components and to reduce the number of models.
将数字作为文本对待会产生错误结果，尤其是当这些值是有符号数字时，因此，列文本必须转换为数字类型。
Treating numerical values as text yields incorrect results, especially if those values are signed; therefore, the column text must be converted to a numerical type.
如果是无符号数，它要比有符号的快得多。
And if it is unsigned, then it will be more faster than the signed division.
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