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【单选题】
电路如图所示,由电阻RE1,Rf和电容C组成的网络是()A.
交流反馈
B.
直流反馈
C.
交直流反馈
D.
不是反馈通路
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皮皮学刷刷变学霸
举一反三
【单选题】Which logic gate is AND gate?
A.
When all inputs are high, the output is high.
B.
When all inputs are low, the output is low.
C.
When all inputs are high(logic 1), the output is high, otherwise the output is low(logic 0).
D.
As long as one of the inputs is high (logic 1), the output is high(logic 1); Only when all inputs are low, the output is low.
【单选题】Name the logic gate that is formed by this circuit. ______【图片】
A.
positive logic OR gate
B.
positive logic AND gate
C.
negative logic OR gate
D.
negative logic AND gate
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