利用AWT写的JAVA自动端口扫面小程序，通过后台线程不断扫描端口来侦测是否有会话-Small program written in JAVA using AWT automatic port sweep surface by a background thread continuously scan port to detect whether the session

串口模拟器和Java源码，VSPD是国外比较好的一款串口模拟器，可虚拟1~20口，也可检测本机存在物理占用端口，使用程序传送数据后在程序里面也有字节体现-Serial simulator and the Java source code, VSPD is better abroad a serial port emulator can be virtual 1 to 20, can detect the presence of native physical occupation of the

Below the JS program to detect the CPU card reader, the reader to check whether a particular model, determined to open the card reader port reader. This section of the program for auxiliary use more social security card reader.