What is not usually apparent to new assembly language programmers is that the order of instructions affects the speed of the program.

对于新入门的汇编语言程序员来说，不太明显的一个问题是指令的顺序会影响程序执行速度。

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Now I'll enter in the assembly language version of this program and then discuss what each line means.

现在，我来介绍一下该程序的汇编语言版本，此外，我还会对每一行代码的含义做详细的解释。

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Once common functions are written in assembly language they could then be copied into a new program without having to be written again.

一旦用汇编语言来编写公用程序，它们就不必重新书写而可被复制到新的程序中去。

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Examples of assembly language software you may be familiar with are IBM PC DOS and the spreadsheet program Lotus 1-2-3.

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