單片機(jī)波形發(fā)生器報(bào)告(編輯修改稿)
2025-08-18 10:03 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 nsumer automotive and industrialelectronic applications.? Single or Split Supply Operation? Low Input Bias Current: 25 nA (Typ)? Low Input Offset Current: 177。 nA (Typ)? Low Input Offset Voltage: 177。 mV (Typ) LM139A Series? Input Common Mode Voltage Range to Gnd? Low Output Saturation Voltage: 130 mV (Typ) @ mA? TTL and CMOS Compatible? ESD Clamps on the Inputs Increase Reliability without Affecting Device Operation(4)一位共陽(yáng)極數(shù)碼管 由于單片機(jī)的P0口帶負(fù)載的能力不高，所以連接數(shù)碼管的時(shí)候要接上上拉電阻提高負(fù)載能力。具體解法：；；；；；；；（或dp）至于8兩個(gè)腳是內(nèi)部相連的，接VCC。引腳圖如右圖： （1）程序流程圖： （2）鍵盤掃描系統(tǒng)流程圖：(3) 源代碼清單include define uchar unsigned chardefine uint unsigned intsbit s1=P1^0。//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。//當(dāng)按下按鍵時(shí)，P1口輸入0，檢測(cè)出是哪個(gè)按鍵按下sbit s3=P1^2。//sbit s4=P1^3。sbit s5=P1^4。sbit s6=P1^5。sbit s7=P1^6。sbit s8=P1^7。uint d1,d2。uint s,p。uint n。uchar code sintab[256]=//正弦波的數(shù)字量表{0x80,0x83,0x86,0x89,0x8d,0x90,0x93,0x96,0x99,0x9c,0x9f,0xa2,0xa5,0xa8,0xab,0xae,0xb1,0xb4,0xb7,0xba,0xbc,0xbf,0xc2,0xc5,0xc7,0xca,0xcc,0xcf,0xd1,0xd4,0xd6,0xd8,0xda,0xdd,0xdf,0xe1,0xe3,0xe5,0xe7,0xe9,0xea,0xec,0xee,0xef,0xf1,0xf2,0xf4,0xf5,0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfd,0xfe,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfd,0xfd,0xfc,0xfb,0xfa,0xf9,0xf8,0xf7,0xf6,0xf5,0xf4,0xf2,0xf1,0xef,0xee,0xec,0xea,0xe9,0xe7,0xe5,0xe3,0xe1,0xde,0xdd,0xda,0xd8,0xd6,0xd4,0xd1,0xcf,0xcc,0xca,0xc7,0xc5,0xc2,0xbf,0xbc,0xba,0xb7,0xb4,0xb1,0xae,0xab,0xa8,0xa5,0xa2,0x9f,0x9c,0x99,0x96,0x93,0x90,0x8d,0x89,0x86,0x83,0x80,0x80,0x7c,0x79,0x76,0x72,0x6f,0x6c,0x69,0x66,0x63,0x60,0x5d,0x5a,0x57,0x55,0x51,0x4e,0x4c,0x48,0x45,0x43,0x40,0x3d,0x3a,0x38,0x35,0x33,0x30,0x2e,0x2b,0x29,0x27,0x25,0x22,0x20,0x1e,0x1c,0x1a,0x18,0x16,0x15,0x13,0x11,0x10,0x0e,0x0d,0x0b,0x0a,0x09,0x08,0x07,0x06,0x05,0x04,0x03,0x02,0x02,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x02,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0d,0x0e,0x10,0x11,0x13,0x15,0x16,0x18,0x1a,0x1c,0x1e,0x20,0x22,0x25,0x27,0x29,0x2b,0x2e,0x30,0x33,0x35,0x38,0x3a,0x3d,0x40,0x43,0x45,0x48,0x4c,0x4e,0x51,0x55,0x57,0x5a,0x5d,0x60,0x63,0x66,0x69,0x6c,0x6f,0x72,0x76,0x79,0x7c,0x80}。uchar code jctab[128]=//鋸齒波的數(shù)字量表{0x00,0x02,0x04,
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