msp430f169的ADC和DAC同时输出，输出电压的最大值以及输入电压的最大值都减小了。(Both the ADC and msp430f169 of the DAC are output at the same time, the maximum value of the output voltage and the maximum value of the input voltage are reduced.)

在msp430f169上实现双通道dac和单通道dac，并且能用键盘控制dac的输出值，在12864上显示(Double channel DAC and single channel DAC are implemented on msp430f169, and the output value of DAC can be controlled by keyboard. It is displayed on 12864)