Hi, is there anyone know how a matrix keypad works? i need it for my project. But , i don't how it's works. any website i can refer to?
btw, i need to study on PCB routing for a 8 layers board. Is there any useful resources i can refer to when do routing? any recommended e-books about pcb routing method?
thanks for your help.
btw, i need to study on PCB routing for a 8 layers board. Is there any useful resources i can refer to when do routing? any recommended e-books about pcb routing method?
thanks for your help.