6. Look through the text, find the sentences with verbs used in Passive voice. Translate the sentences. Rewrite them in Active voice. Central Processing Unit

1. It is well known in computer science that the words “computer” and “processor” are used interchangeably. “Computer” refers to the central processing unit (CPU) together with an internal memory. The internal memory, control and processing components make up the heart of the computer system.

2. The CPU coordinates all the activities of the various components of the computer. The CPU controls the operation of the entire system by issuing commands to the other parts of the system and by acting on responses. It reads information from the memory, interprets instructions, performs operations on the data according to the instructions, writes the results back into the memory.

3. In digital computers the CPU are divided into two functional units. These units are called the control unit (CU) and the arithmetic-logical unit (ALU). They are made of electronic circuits with millions of switches that can be in one of two states, either on or off.

7. Rewrite sentences from the second paragraph in passive voice.

8. Ask general and special questions to the sentences from the first and third paragraphs.

9. Rewrite the following sentences in plural.

1. Personal computer usually has a tower, a separate monitor, a keyboard and a mouse.

2. The study doesn’t include the analysis of this problem.

3. The hard disk stores datum and software program.

4. What means of measurement do you use?

10. Fill in the gaps with much, many, (a) few, (a) little. Translate the sentences.

1. There are … different types of computers.

2. There is … doubt that computers are among the most significant technical achievements of the last century.

3. … computers run the Microsoft Windows OS.

4. Programs with … graphics need a large RAM to run well.

5. You can type letters with a 500 MHz CPU but it’s too … speed for watching movies on the Internet.

Speaking

11. Work in pairs. Look at the chart and compare the two computers. Use fast, slow, cheap, expensive, big, small

	Hi-Tech 2010	Series X Wi-Fi
Type	PC	Notebook
CPU	933 MHz	1.5GHz
RAM	256MB	512MB
Monitor/ Screen	17 inch	15 inch
Hard disk	20 GB	40 GB
Price	€2,000	€2,999

12. Read and translate the dialogue “Meeting the foreign students”

Mike Pospelov	Hello, Tony. How are you?
Tony Cartwright	I’m buzzing, thanks. And you?
Mike Pospelov	I’m OK, thank you. I’d like you to meet Alex Vasilev, my group-mate.
Tony Cartwright	Nice to meet you, Alex.
Alex Vasilev	Nice to meet you too. Have you ever been to Kemerovo before, Tony?
Tony Cartwright	No, it’s my first visit to your city.
Alex Vasilev	What are your first impressions of Kemerovo?
Tony Cartwright	I like it, it’s very beautiful and quite different from Cambridge.
Alex Vasilev	I hope you’ll enjoy your visit, Tony.
Mike Pospelov	Andrey Petrovich, let me introduce Tony Cartwright, our guest from Harvard University. Tony, this is Mr. Severov, our English teacher.
Tony Cartwright	Glad to meet you, Mr. Severov.
Mr.Severov	Glad to meet you too, Tony. Welcome to our university.