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15. Read the text and answer the following questions:

1. What are the functional units of CPU?

2. What is the function of CU?

3. How does CU operate?

4. What is the function of a counter?

5. What role does a decoder play?

6. What is the sequence of CU operations?

7. What is the function of the arithmetic-logical unit?

8. What operations are performed by ALU?

9. What primary components does ALU consist of?

10. What is the function of an accumulator / comparer?

16. Give English equivalents for:

Функциональные блоки; устройство управления; ариф­метико-логическое устройство; управлять работой всей системы; получать команды; основная память; посылать сигналы; считывать команды поэтапно; таким образом; временно сохранять информацию; производить пометки через равные промежутки времени; последовательность операций; регистр памяти; регистр команд; адресный ре­гистр; счетчик; датчик; дешифратор; адрес операнда; ад­ресный регистр, высокоскоростной двоичный сумматор; по крайней мере; вычитание; сложение; умножение; деле­ние; принимать решения; результаты сравнения.

Vocabulary Practice

17. Revise the meaning of new words from the text above. Give Russian equivalents for the expressions with them. Use them in your own sentences.

Register: address register; base register; clock register; com­mand / instruction register; counter register; CPU register; hard­ware register; input / output register; memory register; operand register; general-purpose register; special-purpose register.

Counter: binary counter; character counter; data counter; instruction counter; pulse counter; sequence counter; storage counter; software counter; time-out counter.

Selection: color selection; directory selection; drive selection; file selection; function selection; keyboard selection; menu se­lection; security selection.

Management: data management; database management; disk management; error management; information management; memory management; network management; resource manage­ment; task management; window management.

18. Give synonyms to the following words:

Verbs: to work; to control; to receive; to keep; to send; to perform; to demand; to choose; to supply; to pass; to name; to include; to apply; to come back; to found; to explain; to form; to define; to arrange.

Nouns: computer; answer; commands; memory; element; device; information; state; aim; heart; solution; computation.

Adjectives: main; whole; separate; quick; correct; large; main (storage); following; every; following; specific; different; real.

Your Ideal Computer System

19. Make notes about the features of the computer that you would most like to have. Think about the features in the box.

CPU Speed Optical disc drives Wireless connectivity Minimum/maximum RAM Monitor Ports and card memory slots Hard disk Software

20. In pairs, describe your ideal computer system. Give reasons for your choices.

USEFUL Language

It’s got...

It’s very fast. It runs at...

The standard RAM memory is... and it’s expandable…

The hard disk can hold...

I need a large, flat LCD screen because...

As for the Internet,...

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