说明：  本文所用的仪表为梅特勒公司出产的BE01型电子秤，其输出的每个编码均为标准的ASCII码。以VB串口编程实例方式入手，可以迅速掌握串口用法。
(This paper used for the Mettler Instrument Corporation BE01 produced electronic scales, the output of each encoder are standard ASCII code. To VB programming examples of the way the serial started, you can quickly grasp the serial port usage.)