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Put the proper words into sentences:

analytical, digital, unreliable, sophisticated, solve, core, processor, computations, an integral circuit.

1)The Difference Engine could ... equations and led to another calcu­lating machine, the ... Engine, which embodied the key parts of a computer system: an input device, a ..., a control unit, a storage place, and an output device.

2)Ada Lovelace helped to develop instructions for carrying out ... on Babbage machine.

3)J. Atanasoff devised the first... computer to work by electronic means.

4)First-generation computers were ..., the main form of memory be­ing magnetic...

5)In the third generation software became more...

6)What was the name of the first ... computer to work electronically?

7)When electricity passed through the ..., it could be magnetized as either “ofF’ or “on”.

8)A ...is acomplete electronic circuit on asmall chip of silicon.

Ex 1

1. in year four seasons

2. My favorite season is summer

3. It's warm in the summer, you don't need to go to school, you can hang out with friends on the street until late

4. walk outside

5. Stay at home and play computer games

6. weather in Krasnodar in sprink sometimes cold sometimes warm

Ex 2

Present Simple

1. I sometimes plays computer Games

2. I usually walks with me friends

Present Continuous

1. We are cooking now

2. I go to park with my family at the weekend

Present Perfect

1. I have readed a book

2. They drunk water

Ex 3