◆电子电路(Circuits) Device-Electronis Circuit-Electronis system Basic Device:Diode Bipolar Junction Transistor (BJT) Field-Effect Transistor (FET) Integrated Circuit (IC) Basic Circuit-Analog Circuit:Voltage Amplifier Circuit Amplifier,Power Amplifier Comparator,Summing Amplifier Integrator、Differentiator、Filter Voltage regulator、. ◆电子电路(Circuits) Device→Electronis Circuit→Electronis system Basic Device: Diode Bipolar Junction Transistor (BJT) Field-Effect Transistor (FET) Integrated Circuit (IC) Basic Circuit-Analog Circuit:Voltage Amplifier Circuit Amplifier、Power Amplifier Comparator、Summing Amplifier Integrator、Differentiator、Filter Voltage Regulator