南天系列银行写高抗磁卡（VB源码），串口通信的例子，源代码完整，读写各个磁道数据，密码键盘输入等操作。利用COM串口实现的磁卡读写操作实例，对编写硬件通信有帮助。-South Bank write-day series of high anti-magnetic (VB source code), serial communication examples, source code integrity, read each track data, passwords, keyboard input and other operations. Examples of the use of magnetic read and write operations to realize the COM port for the preparation of the hardware communications help.