English for Specific Purposes

Electronic Engineering 105

DETAILED COMPREHENSION

14. Reread the text and mark the following statements as “true”, “false” or “no information”:

			True	False	NI
1.	The telephone network required hundreds of thousands of relays to connect

		circuits together to complete calls and its cost was very low.

2.	The transistor has only two basic functions: switching and modulation – the
		latter often used to achieve amplification.

3.	The way to make transistors better, cheaper, and more efficient is to
		understand conductors better.

4.	Thanks to such techniques as photolithography and computer-aided design,
		millions of transistors and other electronic components, complete with wiring,
		can be compactly organized on an integrated circuit tiny in size.
5.	The microchip purpose depends on the sequence of transistors in the
		integrated circuit.
6.	Both the dimmer and the transistor monitor current flow, be it through a lamp
		or a device to be activated.

7.	The cost of the transistor today is not high.

8.	Semiconductors studying will help to improve transistors.
9.	Transistors cooperate to create timers to control watches or microwave oven,
		or sensors to monitor temperatures, detect intruders, or control car wheels
		from locking (ABS systems)

10.	Silicon and gallium arsenide carry electricity well enough to be called a
		conductor, like copper wires.

SPECIALIST READING B: The Junction Transistor

15. Look at the paragraph titles and the pictures below without reading the text and ask all possible questions that would be useful to predict what information the text contains. _______________________________________

_______________________________________

_______________________________________ 16. Read the text and decide whether these points are discussed in it.

n-type emitter has many extra electrons

Diodes

n-type and p-type

current amount through a transistor Bipolars

Yes No Yes No Low doping use