29. Ответьте на вопросы:

1. Almost all of today’s computers are based on the same design. Describe the three main elements of that design and list the four main types of computers in use today.

2. Computers based on а microprocessor are known as microcomputers. There are now several different types of microcomputers in use. Describe them.

3. The central processing unit is the computer’s main processing device. Name the CPU’s three different components and describe what they do.

4. Describe the role of input devices.

5. To use today’s computers, we have devised а number of different methods to encode computer data. Name three different data encoding systems and describe each system’s purpose.

6. Today’s computers use secondary storage systems to store data that is not currently being processed. Name and describe three different types of storage systems that use disks.

7. Compare and describe the use of а command-line human-computer interface with а graphically oriented interface.

LESSON 3

Времена группы Perfect Active, Passive

Подлежащее, сказуемое

Суффиксы глаголов и числительных

Text A Computer software

Text B Systems software

Text C Applications software

Text D Programming software

PRE-TEXT EXERCISES

1. Объясните употребление времен группы Perfect, переведите:

1. She has been absent this week. She has been ill. 2. We have already written our term papers. 3. We have never been to England. 4. The rain had begun before we arrived home. 5. I have not seen my friend since the holidays. 6. He asked me if I had been invited to the party. 7. Have you already finished your diploma work? – No, I shall have finished it by the end of May. 8. Before the exhibition closes eighty to ninety thousand people will have attended it. 9. The once insoluble problems have been easily resolved by the research team. 10. Has she graduated from the University yet? 11. By the end of March the project will have been realized. 12. The project has already been submitted to the commission. 13. Easton and Fagin had found that the quality of the model improved. 14. The system had been installed before we finished. 15. This term has been used for a long time.

2. Выберите правильную форму сказуемого:

1. He (has graduated/graduated) from the RSVPU this year. He (graduated/ will have graduated) from the RSVPU in 5 years. 2. I (read/ have read) this article in the morning yesterday. I (read/have read) this article this morning. 3. We (saw/have seen) this film last year. We never (had seen/have seen) it before. 4. The title of the article (will be changed/will have been changed) by the author. 5. This method (is used/has been used) since 1999. This method (was used/ had been used) yesterday.

3. Раскройте скобки, поставив наречия в нужное место в предложении:

1. We have passed our examination (just). 2. They have finished their research work (already). 3. My sister has been a good student (always). She has been late for classes (never). 4. The dean has changed the time of our meeting (just). 5. I have not heard the news (yet). 6. He has told us about his scientific work (never).