專升本《數(shù)字電子技術(shù)》考試答案

T0CP、TQ:C2.,:D置0置1:C4.:B5.AB+C=AB+DCD:BAFABC:C7.,:B下圖是某計(jì)數(shù)器的狀態(tài)轉(zhuǎn)換圖,時(shí)為三進(jìn)制計(jì)數(shù)器、:C9.YABACABCACDYBYC:B10.4,無論輸出端為高、低電平,,無論輸出端為高、低電平,:C圖示三極管電路中,,:AUDDARYBYABYABYABYAB:A13.4CD0110000011110111CD0001111011000111101XX111CD0001111011000111101XX111CD0001111011000111101XX111:C14.4DTJK:C由CRtw84R6u35Ou27IF1C（:D16.4個(gè)邏輯圖中,:D17.F（B)FABCFABCABCFACBCFAABC:A18.用四個(gè)觸發(fā)器組成計(jì)數(shù)器時(shí)，有效狀態(tài):B19.:A20.3016100000249108421BCD4930）301000002100000249）:C1.(65)8:C2.JKDT:B3.Y=A+BYABYABYABYAB:A4.由,要降低電路的振蕩頻率,CC:D5.Y(AAC)(BDCDD):C6.0或1:A7.:B8.C8）:A9.:D10.:C⊕BBAA+BABAB:B12.YAEBEY(AB)EY(AB)EYAEBE:D13.0,CPA的波形如圖示,則Q:C14.:C15.40101100:DFBCABC16.FABABCABCABCFC，，)mmmm1357FABCABCABCFABC(，，)mmmm1567:D17.:C18.YC1、有1個(gè)為高電平，C1有1個(gè)為低電平，C1C2、C1、C2、:B19.,,:D20.:BM211000×001×000021.時(shí)為進(jìn)制六計(jì)數(shù)器、:C+U84R121C122.由:B23.（B，=∑m(3,4,6)+∑d(25,7)ABBCABAABC:C24.若加大施密特觸發(fā)器的回差電壓,4:B25.函數(shù)的真值表如下表所示,:D26.1823:C27.:DA&&YB28.YABYABYABAB:A29.YABCABACBCYBCYABCYACBCYABC:D30.4:B31.36個(gè)個(gè)8個(gè)4個(gè):C32.,:B33.YACBCBC為0BC:B34.門:B35.4AA當(dāng)A當(dāng)A:B36.、BYABYFABFAB⊕BFAB:A37.,:B38.F(A，B，ABCABCABC:D39.4JKTD:C40.下面列舉的各觸發(fā)器的輸入信號(hào)中,TDJK:D1.,B,YABDABY的波形如下圖所示,4個(gè)真值表,D4.下列各電路在時(shí)鐘作用下,DD1.D2.,DFACCAB3.FACFACBCFACABFACABC）m4.與B，F(xiàn)ABCABCABCFACABFABCABCABCFBCABCABCAB5.D6.4個(gè)D7.下圖是