创建一个“计时”测试程序。自行指定一个数学表达式，比较利用公示节点计算和利用本地LabVIEW数学函数计算该数学表达式的平均时间。程序需要一个FOR循环，一个顺序结构和一个case结构。要求FOR循环运行计时测试N次，然后使用统计快捷VI对结果计算平均值 要求顺序结构在代码运行之前和代码运行之后对时间延迟函数进行采样 case结构要判定用户是要执行公式节点还是要执行LabVIEW固有数学函数.,对每个分支运行计时测试程序,比较较快的执行方法.-Create a "timing" test procedure.Designate a mathematical expression, comparing the use of publicity node calculation and using the native LabVIEW function of mathematical calculation of the mathematical expression for the mean time.Program requires a FOR loop, a sequence structure and an case structure.Requirements of FOR cycle time test for N times, then use statistical fast VI on the results to calculate the average value　sequence structure in the code to run code before and after the operation on time delay function sampling　case structure to determine the user is to perform the formula node or to the implementation of LabVIEW inherent mathematical function, on each branch operation timing test procedure comparison of rapid, execution method.