附录二： R1-△R1R2+△R2输入正极R1BRIDGEU12VCCP0.0P0.1P0.2P0.3P0.4P0.5P0.6P0.7P1.0P1.1P1.2P1.3P1.4P1.5P1.6P1.7P2.0P2.1P2.2P2.3P2.4P2.5P2.6P2.7403938373635343332123456782122232425262728+5V+5VR?Res21KVCCR11K+12LEDQ1PNPU1BellC4 R4+△R4R3-△R3+5VC5100pF30PGNDL19312930RSTEA/VPPPSENALE/PROG_输入负极_1Uout30P24M1918XTAL1XTAL2+5VUin+200VCC161514131211109U921K101112中断1131415读16写17P3.0P3.1P3.2P3.3P3.4P3.5P3.6P3.7C130PFC2SCLK2M/CSRESET30PF输入正极输入负极12345678SCLKGNDMCLK INVDDMCLK OUTDIN/CSDOUTRESET/DRDYAIN2(+)AIN2(-)AIN1(+)REF IN(-)AIN1(-)REF IN(+)AD7705SCLK/CSRESETDINDOUT/DRDYU2VSS1435810124GNDDS75492MU31435810VSS11VCC12345678abcdefgdp11KEY0VCCKEY1KEY2KEY3驱动1驱动21LED132LED146LED157913DINDOUT/DRDY120VSSat89c52S0S1S2S3S4S5S6S7驱动3KEY4KEY5KEY6KEY7LED199LED29LED39LED4DS31KNCbcdpLED5DS49U6456123E1E2E3A0A1A2VCCY0Y1Y2Y3Y4Y5Y6Y71615141312111097VCCKEY4KEY5KEY6KEY7VCCafegd1KNCbcdpDS11012345678abcdefgdpVCCafegd1KNCbcdpDS21012345678abcdefgdpVCCafegd1KNCbcdp10U8L13876512131415161718194CLKRL7RL6RL5RL4DB0DB1DB2DB3DB4DB5DB6DB7IRQCSRDWRRESETCNTLSHIFTGNDVCC1LED12LED26LED37LED49LED513LED6RL0RL1RL2RL3213938KEY0KEY1KEY2KEY38GND1S0S1中断1S2S3S4SN74LS07DU1AS5S6S721GND12345678abcdefgdpVCCafegd1012345678abcdefgdpVCCafegd1KNCbcdp10SL0SL1SL2SL3BD3233343523SN74LS138NU7VCCY0Y1Y2Y3Y4Y5Y6Y7Y8Y9Y10Y11Y12Y13Y14Y152412345678910111314151617VCCDS?Dpy Red-CALED69Dpy Red-CALED79Dpy Red-CALED89Dpy Red-CALED99Dpy Red-CALED10DS91012345678abcdefgdpDS54GND1112345678abcdefgdpVCCafegd1KNCbcdpDS61012345678abcdefgdpVCCafegd1KNCbcdpDS71012345678abcdefgdpVCCafegd1KNCbcdpDS81012345678abcdefgdpVCCafegd1KNCbcdp912VCCafegd1KNCbcdp10片选22写10读11+5V937362KA0200UFOUTB0OUTB1OUTB2OUTB3OUTA0OUTA1OUTA2OUTA3313029282726252423222120DS75492MU5VSS1435VCCABCD1LED72LED86LED97LED102Dpy Red-CALED119Dpy Red-CALED129Dpy Red-CALED139Dpy Red-CALED149Dpy Red-CALED15DS141012345678abcdefgdp40202110124GNDDS75492M9LED1113LED1212345678DS10abcdefgdpDS11NC12GNDVCCafegd108279GND713591113U9GNDVCCA1Y1A2Y2A3Y3A4Y4A5Y5A6Y6Component_1DM54LS154JVCC14246810121U2A2bcdp12345678abcdefgdpVCCafegd1KNCDS121012345678abcdefgdpVCCafegd1KNCDS131012345678abcdefgdpVCCafegd1KNC91819OE1OE2驱动1驱动2驱动38VCCafegd1KNC10bcdpbcdpbcdpbcdpDpy Red-CADpy Red-CADpy Red-CADpy Red-CADpy Red-CASN74LS07DU3A12+5VSN74LS07D 19
致 谢
在这几个月的时间里，从对课题的理解，方案的设计，到程序的编写，再到论文的写作，中间有着自己的努力，更有着老师和同学的关心和巨大的帮助。
首先我要对本论文的指导老师***老师致以衷心的感谢！从论文的选题、有关资料的收集、课题的讨论，到论文的撰写和修改，导师都给了我悉心的指导和帮助。他对学生认真负责的态度让我由衷地敬佩。
感谢***同学给予我无私的帮助，他们对我所遇到的难题的解答让我受益匪浅。 感谢母校和老师们在大学四年中对我的培养。
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