霍尼韦尔 621-1101R Isol 输入模块 115VAC

霍尼韦尔 621-1101R Isol 输入模块 115VAC

霍尼韦尔 621-1101R Isol 输入模块 115VAC

霍尼韦尔 621-1101R Isol 输入模块 115VAC

霍尼韦尔 621-1101R Isol 输入模块 115VAC电路图

霍尼韦尔 621-1101R Isol 输入模块 115VAC引脚线

霍尼韦尔 621-1101R Isol 输入模块 115VAC选型手册

621-1101R 功能模块化的根据是，如果一个问题有多个问题组合而成，那么这个组合问题的复杂程度将大于分别考虑这个问题时的复杂程度之和。

621-1101R 这个结论使得人们乐于利用功能模块化方法将复杂的问题分解成许多容易解决的局部问题。

621-1101R 功能模块化方法并不等于·限制地分割软件，因为随着功能模块的增多，虽然开发单个功能模块的工作量减少了，但是设计功能模块间接口所需的工作量也将增加，而且会出现意想不到的软件缺陷。

621-1101R 因此，只有选择合适的功能模块数目才会使整个系统的开发成本·小。

621-1101R The basis of functional modularization is that if a problem is composed of multiple problems, the complexity of the combined problem will be greater than the sum of the complexity of the problems when they are considered separately.

621-1101R This conclusion makes people willing to use functional modularization methods to decompose complex problems into many easy-to-solve local problems.

621-1101R The functional modularization method does not mean unlimited division of software, because as the number of functional modules increases, although the workload of developing a single functional module is reduced, the workload required to design the interface between functional modules will also increase, and there will be Unexpected software bugs.

621-1101R Therefore, only by selecting the appropriate number of functional modules can the development cost of the entire system be minimized.

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