As mentioned, most computers include a serial port. The only hardware setup required is connecting the serial cable to the serial port on the PC and t...
一个简单的端口扫描程序：
addstr = "发现端口" & Str(port) & "打开" & Space(5) Select Case port Case 7 plus = "ECHO服务" Case 21 plus = "FTP服务★★★★★" Case 25 plus = "SMTP服务...
