一个利用task和电平敏感的always块设计比较后重组信号的组合逻辑的实例。可以看到，利用task非常方便地实现了数据之间的交换，如果要用函数实现相同的功能是非常复杂的；另外，task也避免了直接用一般语句来描述所引起的不易理解和综合时产生冗余逻辑等问题。-A use of task and level-sensitive always block design compared the reorganization of the signal combinational logic example. Can see that the use of task is very convenient to realize the data exchange between, if they function to achieve the same functionality is very complex　In addition, task is also to avoid the direct use of the general statement to describe the difficulty arising from the understanding and synthesis have a redundant logic and so on.