We are finally ready to apply the knowledge we gained in previous sections about electrons, vacuum 1 and transistors to some practical matters. In the following sections we shall consider a variety of circuits employing electron tubes and transistors. 2 are combinations of tubes or transistors with other components, such as resistors, capacitors and inductors, and form the 3 building blocks of electronic systems: radio, automatic computer and so on. To understand the systems, you must be familiar with the circuits that 4 them up. а) tubes б) basic в) make г) Circuits

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