这是ATmega128开发板的原理图和PCB文件，没有问题，用Protel 99直接就可以打开，已经打样测试过，很有参考价值。-This is the ATmega128 development board schematic and PCB files, no problem, using Protel 99 directly on the can open, have been tested proofing, great reference value.

ADC program Analog o/p of joystick connected to i/p of ADC ports of ATMega 128 .Depending on the movement of joystick , contrast of the LEDs connected to port C will change.