Exercise 1. Answer the questions. What influences the operation of an integrated circuit? (the quality of microscopic components it consists of) 2. What is the function of a computer? (making a great number of calculations at a very high speed) 3. What will be the speed of the fifth-generation computers? (100 billion operations a second) 4. What can increase the operation speed many times compared to the present computers? (a photon) 5. What physical phenomenon can be used to improve a computer's speed? (light) 6. What are the advantages of light for computation purposes over electronics? (the capability to move faster, in parallel lines and pass one another)
Exercise 2. Make a sentence out of the two parts.

1. Nowadays electronic devices

2. We are surrounded

3. There are

4. A personal computer

5. People are carried by

6. The modern production is unthinkable

7. It is impossible to imagine

1.airplanes, ships, trains and cars having built-in electronic circuits and instruments.

2.is being used more widely at home and in office.

3.without electronically con-trolled machine-tools.

4.with electronics everywhere in everyday life and at plants and factories.

5.scientific research without computers.

6.are in general usage.

7.electronic watches we wear, telephone, radio, and TV sets we speak, listen to and watch.