Basic weighing functions, and play to display a list of some of the features, yo...

代码说明：

基本的称重功能，和发挥部分的显示购物清单的功能，可以设置日期和重新设定 10 种商品的单价，具有超重报警功能，由于系统资源丰富，还可以方便的扩展其应用 -Basic weighing functions, and play to display a list of some of the features, you can set the date and re-setting unit 10 kinds of commodities, with overweight alarm function, the system is rich in resources, but also facilitate the expansion of its application