数字电路实验Multisim仿真汇总

1、实验一逻辑门电路、与非门逻辑功能的测试74LS20（双四输入与非门）仿真结果AdBA-CidB输入输出电压(V)输出逻辑状态ABCDY000051000151001151011151111100二、或非门逻辑功能的测试74LS02（四二输入或非门）VCC仿真结果:VCCXMM12.5输入输出电压（V）输出逻辑状态ABY0051010010001100三、与或非门逻辑功能的测试74LS51（双二、三输入与或非门）仿真结果：输入输出ABCDY0000100011001100111011110四、异或门逻辑功能的测试74LS86（四二输入异或门）各一片仿真结果：输入输出ABY000011101110

2、二、思考题1.用一片74LS00实现Y=A+B的逻辑功能；2.用一片74LS86设计一个四位奇偶校验电路；实验二组合逻辑电路UIA74LS00DA-B741SOOD74LS00DUSA、分析半加器的逻辑功能74LS00D74LS00DUIAm2.5V74LSQ0DA-B74LSOODUSAvccvcc.74LS00D74LS00D74LS00DUIA2.5V74LS00DmB74LSOOD74LSOODUSA74LS00D74LSQOD输入输出ABSCO0000011010101101T!U1S2S3S-1XjNDVC74LS138Ddi莅X1X2X3X4X5XX7X8S1S2S3A2A1An

3、Q0Q1Q2Q3Q4Q5Q6Q7011111111111111111110000001111111100001101111111000101101111110001111101111100100111101111001011111101110011011111101100111111111103.验证数据选择器的逻辑功能&vU1X12Yc-u1?:.!-!-cccc1111c-_u12_.cccc*-z222y=?K詢LEKeyaw1dbT4.思考题（1）用两片74LS138接成四线-十六线译码器0000U238DKeX=74LS174LS1X1X2X3X4X5X6X7Xflv方叭丁收丁七GL

4、i-&AX15X16XSX10X11X12X13X14we岂-Ef-?i：i-逬1上-&2Ai*4-匹-rbX1?38D0001X1X2X3X4X5XCX7X8m38D38D74LS174LS1刈X10X11X12X13X14X15X169*e*e*e*(Gk占-&A-&2BA-E弋-?i：i-辽进GL占.-D2ArJx*4奚-i*Sri0111*-474LS138D岂-E-?i：i-逬1上-&2Ai*4-匹-rbX1?2:g込！GL-沁-1*5-DEB远-X1?H-E-S2-S3GND(3)用一片74LS153片74LS00和接成一位全加器LHKoy=d-47（1）设计一个有A、B、C三位代

5、码输入的密码锁（假设密码是011）,当输入密码正确时,锁被打开（Y=1）,如果密码不符，电路发出报警信号（丫2=1）。以上四个小设计任做一个，多做不限。：zGND还可以用门电路搭建实验三触发器及触发器之间的转换1.D触发器逻辑功能的测试（上升沿）.：U-R-；=1CLM-IQHi-、iij：1FLB仿真结果;-：=ICLlf-IQHi-ii江ELI：74LS74D.：U-R-；=1CLM-IQHi-、iij：1FLB.：LFT-：=IC-Llf-IQill江ELI：.vccmmX1X2gn6k=r-；=ir-LM-IQHi1LELE-74LS74DCPDRdQQXX11-001XX10-101

6、XX1-0110XX0-1110XX0001vccT!mXIX2gn6k=r.:-UE-：=ir-LM-1Qill1-il江ELE-74LS74DTX1X2aIPRPICLM-iQJJLI*MLQ&LRU1A-74LS74D:GN6y=：R：D0RdCPQn+1Qn=0Qn=10110-100111-0001110-111111-0112.JK触发器功能测试（下降沿）VCXtX-2-UIALJ-JJJ1C-LH74LS1I2RVCCVCKey=;SX4X2iC-LXIX-九QJEERKey=Ci74LS112OKeyqrK,VCX1X2Key=;SU1A厶ipp1C-LK:玄Key=Ciix-

7、心QJEER74LS112OKeyqrK,l.T-Key制JJlXIX-2-|Key=RsJzGND：-:KeyrfrK74LS1I2Rx-iemLJ-UiXIX-2-|Key=RsJzGND：-x-iem7+LS112&Q=0略JKSRCPQn+1Qn=OQn=10011Of101lfO012）0111Of1011-0001011Of1011-0111111Of1011-0103.思考题（1）Tri口口曰r40003Qualifier(T)厂57T：ttti4T：tttid1:TTTi$TtniL?TtniL9TtniL9Ttm10Ttm11TtniL11Tmnl3TbuI斗Taeml占Tt

8、nn16ClndifritCli3cJiQuaTrtggQuas-ltlX-3ill-om-UIA74LS112D=1IT:上J-：=1DLK-K-Li-=-lFLF：-3）略实验四寄存器与计数器1右移寄存器（741S74为上升沿有效）5V2-5V2.5VillK&y=DJ474LS112D-IV-itriR-1ST-.-1ft-1O1R-2.3位异步二进制加法，减法计数器（74LS112下降沿有效）X1VCCKey=R5D-1EB-卜LCLR-X1QU3A74L&112DKeygndVCC25V0ZfiV74LS112D7FROLELH-LCLF.-LES74LS112DtR-*LJ-LCM

9、-1E3-IT:；nLELK-1ft也可以不加数码显示管2.5VJXYi74LS112D74LSII2DJX74LS112D74LSII2D41CLH25VO25V0O：2.5V:hey-R占砂:hey=FR丄刖D:QCDHEX74LS112D74L5112D2.5V.-irr.TxlEIBxlJX&：.-Irr.TxiriEzJ-EU74LS1GDNU2DCDHEX:(2)74LS160设计7进制计数器略3)24进制7+LS1WH：GND：.X83进制IJ?UAD-XI：-11X帖B醪QQC-3074Lb-16Hi-內3BQFcqc-四I174LS-1W3N注意：用74LS160与74LS1

10、97、74LS191是完全不一样的实验五555定时器及其应用1.施密特触发器R13sGNDvcc68%LM555CMXMM2C1土1OnFvcc-RST-0U7315IHRTRICONGND52厂0XMMlR1XMH12住GNDI5V输入电压从零开始增加：LM555CM*inidB11Ii存二XMM2.L1ClztfOnFTHP.GNIT500nVA|爲|dB|Ivcc输入电压从5V开始减小:ikn:KeysA1:ikn:KeyA4iIJ爲I(fIr=-+rt1IrS“fii1V爲|曲Ir=-3.35-1.65=1.7V2.5V-!RSTDISTHRCON?GND-ICey=SpaceC2ilOnFR13.9kQvccOUT1TRILM555CIWG1LilOnF单稳态触发器3.多谢振荡R24lOOktl79琢Key=AR13.9kQG210nFETrigrC1L10nFB41七gndKSC1LM555CM:-vcc-R.hTuUTD1hTHRTRICON-GND-0DUL1X3IOSX：l-X:2_M2gE(3J-JIydDDS忙Ei7T11；：P：PW；UI4ULr：(l-l.Il辻IA1399SmZHZbZ:baJdVd旳它：Qp)