Config lcd and keyboard by ATtiny13!!

This project is made by a lcd 2*16 and 74hc595 and ATtiny13!!

This project is ideal for little microcontroller like Attiny13 and reduce pin and wire for configure lcd and keyboard. This project can multiplex 8 key (be can development by add 74hc595). Configuration lcd in 8bit mode and (in 4bit mode ATtiny13 don’t have enough rom). The sample schematic is design in proteuse. You can get source code and schematic here.