컴파일러 http://easynews.dl.sourceforge.net/sourceforge/winavr/WinAVR-20060421-install.exe 회로도 http://dubel.org/atmel/devatmel.sch 회로기판 http://dubel.org/atmel/devatmel.brd /** * Hitachi HD44780 interface code. Provides initialization and functions * to write data and commands to a display. The code is written for a * 20x4 display, but the line wrap constants can be changed for..