kalyaniupen
Junior Member level 2
My project is Interfacing one 4x4 keypad with two 89 c55wd ics. That means the keypad connected to one 89c55wd should display the same data on both LCDs. C code is same for two controllers.Please suggest me.Already hardwired same keypad to two microcontrollers but not working.LCDs are not displaying same data.