KEYDAC

代码说明：

  本文件是C8051F040键盘及DA输出测试程序；DA输出端子(J10)可输出2路DA(DAC0,DAC1),四路按键(KEY1--KEY4，须设置跳线JP5)，测试时按下KEY1--KEY4，分别对应DAC0，DAC1输出0.5V，1V，1.5V，2V。 (The present document is a C8051F040 keyboard and DA output test procedures DA output terminal (J10) can output 2-way DA (DAC0, DAC1), four buttons (KEY1- KEY4, shall be provided jumpers JP5), test press KEY1--KEY4, corresponding to DAC0, DAC1 output 0.5V, 1V, 1.5V, 2V.)