实现VB和松下PLC通信 单独读写1位 "X" "Y" "R" "C" "T" 一次读写多个不同类型的位 "X" "Y" "R" "C" "T" 一次读写多个数据 "WX" "WY" "WR" "WL" "DT" "FL" "LD" "SV" "EV" -Panasonic VB and PLC communication to achieve a separate read and write an " X" " Y" " R"

实现6层楼电梯控制系统的程序代码，给需要的朋友做参考，自己大学时候设计的-The realization of 6 floors of elevator control system code to a friend in need a reference, when the design of their own university

Cross – Correlation of the Two FSK Signals. FREQUENCY SHIFT KEYING - ERROR PROBABILITY: The Probability of error of an FSK system depends on the separation of “distance” d, between two (or more) signals The probability of error is minimu