Delphi开发环境下用API实现串口通信，给出简单易行的解决办法。-Delphi development environment serial communication API implementation, given the simple solution.

DELPHI 串口通讯实例，详细说明如何使用串口控件，非常适合初学者学习-DELPHI serial communication example, detailed descr iption of how to use the serial port control, very suitable for beginners to learn

在公司写的delphi程序，用来加密序列号和解密序列号。-In the company to write the Delphi program, used to encrypt the serial number and decryption sequence number.