麻烦都写一下 谢谢
1 Kirchhoff;s current and voltage Laws are laws that are based on the connective features of a network..the current Law governs the sum of the currents at any node of the network..the voltage
LAW goverrns the sum of voltages around any loop in the network.theese laws say nothing about
The elements themselves
2 All voltage sources are characterized by a vertical line
3 All resistors are characterized by a line with positive slope going through the brigin
4 The elements of digital electronics are called logic gates
5 Materials can be divided into three main type according to the way they current when a voltage is applied across them
6 The most significant development in electronics since world war 2 has been a small semiconductor device called the transistor
7 A semiconductor material is one that is neither a conductor nor a nonconductor (insulator).this means simply that it will not conduct current as a conductor or block current as well as an insulator
8 The two electrodes or terminals the diode are called the anode and cathode,as seen
In fig.which shows the schematic symbol of a diode.as far as operation is concerned,the diode operates like a switch.
9 There are two types of field effect teansistors or FETs
10 THE metal oxide semiconductor field effect transistor(MOSFET
11 A low-resistivity electrode,called the gate,is formed on top of the oxide.semiconductor
12 The region between the source and drain is called the channel