用西门子V5.5编写的PLC程序，可以实现对按钮单击、双击、连击的判断，自己写的，聊以玩乐，YES-V5.5 prepared by Siemens PLC program can be achieved on a button click, double click, batter judgment, write your own, talk to play, YES

西门子PLC step7-300、400的解密程序(The decryption procedure of Siemens PLC step7-300 and 400)