188 | 인천전자마이스터고등학교 ············································································································· UART0 ~ UART1이 구성된 회로이다 라. ATMEGA128A – MAINBOARD 회로도 전광판에서 색깔을 바꿀 수 있게 4개의 버튼과 ISP 그리고 POWER 회로를 구성해보았다.