电路仿真图：方波程序： #include #include #define uchar unsigned char #define DAC0832 XBYTE0xFFF void delay(void); void main() while(1) DAC0832=0; delay(); DAC0832=0xFF; delay(); void delay() uchar i; for(i=0;i #include #define uchar unsigned char #define DAC0832 XBYTE0x7FFF void main() uchar i; while(1) for(i=0;i #include #define uchar unsigned char #define DAC0832 XBYTE0x7FFF void main() uchar i; while(1) for(i=0;i0;i-) DAC0832=i;