單片機波形發(fā)生器報告(文件)
【正文】 case 2:square()。 case 4:triangular()。建電路系統(tǒng)、焊接電路板、編寫系統(tǒng)的程序這方面的能力在課程設計時顯得功力不深。還有LM339的輸出如果不帶三極管放大或者進一步的帶源濾波的話，輸出的電壓會非常低。很感謝指導老師的指導和實驗材料室老師的指點，還有教我仿真的同學。C語言精簡易懂，是最接近硬件的高級語言，在Keil uVision3的環(huán)境下編寫51單片機的程序很適合。像51單片機的P0口帶負載時，書上的示例電路沒見過接個上拉電阻的。 } } }第三部分 心得最大的感悟是在實驗室的自主研究學習效率比在課堂上只聽理論時高很多。 case 3:sawtooth()。 switch(s) { case 1:sin()。 p=4。 while(!s8)。 if(s8==0) { p=p1。 } while(!s7)。//檢測是否已經(jīng)松手了，=1跳出死循環(huán) delay(10)。//確實一下是否真的松手了 } else if(s6==0)//占空比減小 { delay(10)。 d2++。 n=0。 n=0。 n=0。 n=0。 n=n+p。}void sawtooth() //鋸齒波{ P2=jctab[n]。}void square(){ P2=0xff。j++)。uchar code sjtab[256]=//三角波的數(shù)字量表{0x00,0x02,0x04,0x06,0x08,0x0a,0x0c,0x0e,0x10,0x12,0x14,0x16,0x18,0x1a,0x1c,0x1e,0x20,0x22,0x24,0x26,0x28,0x2a,0x2c,0x2e,0x30,0x32,0x34,0x36,0x38,0x3a,0x3c,0x3e,0x40,0x42,0x44,0x46,0x48,0x4a,0x4c,0x4e,0x50,0x52,0x54,0x56,0x58,0x5a,0x5c,0x5e,0x60,0x62,0x64,0x66,0x68,0x6a,0x6c,0x6e,0x70,0x72,0x74,0x76,0x78,0x7a,0x7c,0x7e,0x80,0x82,0x84,0x86,0x88,0x8a,0x8c,0x8e,0x90,0x92,0x94,0x96,0x98,0x9a,0x9c,0x9e,0xa0,0xa2,0xa4,0xa6,0xa8,0xaa,0xac,0xae,0xb0,0xb2,0xb4,0xb6,0xb8,0xba,0xbc,0xbe,0xc0,0xc2,0xc4,0xc6,0xc8,0xca,0xcc,0xce,0xd0,0xd2,0xd4,0xd6,0xd8,0xda,0xdc,0xde,0xe0,0xe2,0xe4,0xe6,0xe8,0xea,0xec,0xee,0xf0,0xf2,0xf4,0xf6,0xf8,0xfa,0xfc,0xfe,0xfe,0xfc,0xfa,0xf8,0xf6,0xf4,0xf2,0xf0,0xee,0xec,0xea,0xe8,0xe6,0xe4,0xe2,0xe0,0xde,0xdc,0xda,0xd8,0xd6,0xd4,0xd2,0xd0,0xce,0xcc,0xca,0xc8,0xc6,0xc4,0xc2,0xc0,0xbe,0xbc,0xba,0xb8,0xb6,0xb4,0xb2,0xb0,0xae,0xac,0xaa,0xa8,0xa6,0xa4,0xa2,0xa0,0x9e,0x9c,0x9a,0x98,0x96,0x94,0x92,0x90,0x8e,0x8c,0x8a,0x88,0x86,0x84,0x82,0x80,0x7e,0x7c,0x7a,0x78,0x76,0x74,0x72,0x70,0x6e,0x6c,0x6a,0x68,0x66,0x64,0x62,0x60,0x5e,0x5c,0x5a,0x58,0x56,0x54,0x52,0x50,0x4e,0x4c,0x4a,0x48,0x46,0x44,0x42,0x40,0x3e,0x3c,0x3a,0x38,0x36,0x34,0x32,0x30,0x2e,0x2c,0x2a,0x28,0x26,0x24,0x22,0x20,0x1e,0x1c,0x1a,0x18,0x16,0x14,0x12,0x10,0x0e,0x0c,0x0a,0x08,0x06,0x04,0x02,0x00}。uint s,p。sbit s6=P1^5。//P1口內(nèi)部自帶上拉電阻，因此外部的輕觸按鍵要接地sbit s2=P1^1。 nA (Typ)? Low Input Offset Voltage: 177。 VREF：基準電壓（10~10V）。XFER：傳送控制
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