【单选题】1个3线-8线译码器74LS138,当输入端A=0、B=0、C=1时,输出Y0和Y7的状态分别为()。
【简答题】Use one sentence to describe your family.
【单选题】如图所示3线-8线译码器集成电路74LS138逻辑符号,当STA=1且 B= C=0时,译码器处于正常译码状态,若ABC=010,则Y7-Y0的输出状态为()
【简答题】The day her daughter was born. The writer’s heart was mousy filled with___________
【简答题】A.Her best friend. B.Her heart's true companion. C.Always a comfort to her soul. D.All of the above.
【单选题】如图所示3线-8线译码器集成电路74LS138逻辑符号,当STA=1且 B= C=0时,译码器处于正常译码状态,若ABC=111,则Y7-Y0的输出状态为()
【单选题】如图所示3线-8线译码器集成电路74LS138逻辑符号,当STA=1且 B= C=0时,译码器处于正常译码状态,若ABC=001,则Y7-Y0的输出状态为()
【单选题】如图所示3线-8线译码器集成电路74LS138逻辑符号,当STA=1且 B= C=0时,译码器处于正常译码状态,若ABC=110,则Y7-Y0的输出状态为()
【单选题】The cruel dilemmas of Schiavo's case lies in ______.
A.
a heart attack in February 1990
B.
her brain deprived of oxygen for five minutes
C.
an infection she caught 3 years later
D.
the disagreement between her parents and her husband on her treatment
【单选题】如图所示3线-8线译码器集成电路74LS138逻辑符号,当STA=1且 B= C=0时,译码器处于正常译码状态,若ABC=101,则Y7-Y0的输出状态为()