Read the following words and notice their pronunciation.

Date: 2015-10-07; view: 455.

Read the following words and expressions and try to guess their meaning.

Pretext exercises

TRANSISTOR

Text B

Answer the questions to the text.

1. What is electronics?

2. How are vacuum tubes classified?

3. What device is called electronic?

4. What is a semiconductor?

5. When was the first transistor invented?

6. What led to the acceleration in the growth of electronics?

7. What is the main purpose of electronics?

8. What are the advantages of transistors?

9. What are the advantages of vacuum tubes?

10. Where are vacuum tubes still widely used?

11. What led to a revolution in physical science?

12. Who invented the first transistor?

13. In what direction do the electrons move?

Key element, electronics, invention, importance, process, produce, discrete, component, circuit, control function, design, terminal, property, output, signal processing, reproduction, amplifier, input, include, current, switch, apply, application, operation, digital circuit, valve, vacuum tube, equipment, replace, voltage, heater, intensity, vibration, limitation, broadcasting, sensitive, mobility.