在本次實驗中，我們把將會使用到的component包裝於package內讓大家使用，package的概念 類 似於c program裡 include *.h的概念 ，以use library的方式，將可用的component procedure, function讓引用此package的entity共用其中的component, procedure, function-In this experiment, we will use to the component within the package in the package so that we use, package type of the concept appears in the c program裡 include*. h of the concept in order to use library means the component will be available procedure, function so that the entity reference for this package in which shared component, procedure, function