数电电子钟设计原理

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2、PSTWSPST1.EBTFCD451 IU15PIP2P3CEP CET >CLKPEMR74LS161U1 IB<_74LSOOUI4H"o 3 J|vcc6 hour2Q3y2 hour2Q2/1 hourlQiy7 hourlQO/14 hour2Q0y13 hour2Qiy12 hour2Q2/ Hhour2Q3/1 >5 houriQ24 hour2QlC5hourlg 14 lH)urll，J： - : H I :hourk 1 1hourlb 12Xhouf laT7lebtttCD45I IUi37 M)mm 2 pc 2hourlpc9 毛L o

3、CEP CET >CLKPEMRQOQiQ】Q、TC74LS161U11Ahourlnc3-/v_74LSOOU12H"0 '丄|VCC6 hourlQ3y2 hourlQ2yI hourIQl/7 hourlQO/14 hourlQOy13 hourlQiy12 hour!Q2y11 hourlQ3/1>hourlQO1 hourlQ313 q2010 Q10U1 IDscclclkl 174LS00741.SOO9 QI 3nun2g 14.i i .n7ir.i.2 j'T!0u.i.2.11nun2b 12 nun2a TTlebtttd c b

4、aCrMSl IQO QIQ2Q3 TC14 min2Q<) y/13 min2Qiy12 min2Q2 / 1J min2Q3 /15iiunlpc 9test1TOrmn I pc 2POPlP2P3CEP CET >CLKPEMR74LS161Rl 1 I OkI'*vcc6min2Q32 m；nH1 min2QI7 min2Q0inmlg 1415 U：!E ： C inmlJ io nunTTTT nun 1 h lT Xininla TT 1 scc2pc 2 min I pc 9 ©!olebtttdcb aCD45IIPOPIP2P3CEPCET&

5、gt;CLKPEMRQO QiQ2Q3 TC741.S161vcc10 min 1 Q<)9 min 1Q3U714 min IQO y 13 mini QI/ 12 min IQ2 >1 1 min IQ3 /15scc2g 14 = " .scc2c TT scc2b 12 Xsala 13LEbTTTDCBACD451 JU56 scc2Q3 /2 scc2Q2 yI sa2Qi y7 sa2Q0 /I-jvccscclg 14TT7 *7 、rr scclb 12 Xsccla 73lebtttCD451 IU3O-CX6 scclQ3 / 2 scclQ2 y

6、I scciQi y7 sccIQO 7714 $cc2Q0 /13 scc2Ql y12 scc2Q2 / I I scc2Q3 /T71Uscclpc 2scc2pc 9 g!oPO PIQO QIP2Q2P3Q3CEP CETTC>CLKPEMR"LSI 61$cv2pc 6U2QO QiQ2Q3TC14 sccIQO /13 sccIQI y12 soclQ2 y1 1 scclQ3 X1 >U4B74LS005 scc2Q04 scc2Q274LS002 sccIQO1 scc1Q3104vcc【04lUUuf+5VVinJO2CON2TideSizeBNumberRevisionDM13Dcc2O(躬Sheet ofFile:E:£Drawn By:<en1 e1 乙 “s |CD4511* « 、丄 oozn- sx ooiw <x oov-w sx> 2口口 TNIU 11<>:*r;112NIHaCD4511/ : / r> 9ie|e zanoHtanoH)CD4511 /、 1CD4511C511&