Read and translate the text

Learn the vocabulary.

Make the sentences negative and ask the questions.

1. This is a large room.

2. I am a mechanic.

3. You are an engineer.

4. We were workers.

5. She was a doctor.

6. We have mathematics today.

7. I have a sister.

8. My friend has French books.

9. They had friends in Kazan.

Invention – изобретение (Vacuum) tube – вакуумная трубка, электронная лампа Device – прибор, устройство Record player – проигрыватель Power – мощность, энергия Microprocessor – микропроцессор Mean (meant) – значить, означать Lead to (led) – вести, приводить к IC (integrated circuit) – интегральная (интегрированная) схема, цепь Silicon – кремний Chip – микросхема, чип Answerphone facility – автоответчик

Entertainment – развлечение Washing-machine – стиральная машина Dishwasher – посудомоечная машина Central heating system – система центрального отопления Sewing machine – швейная машина Food processor – кухонный комбайн Digital – цифровой Electric timer – таймер Water heater – водонагреватель Electric cooker – электроплита Microwave oven – микроволновая печь Automatic dialing – автодозвон

Electronics in the home

Electronics began at the start of the twentieth century with the invention of the vacuum tube. The first devices for everyday use were radios, followed by televisions, record players, and tape recorders. These devices were large and used a lot of power.

The invention of the transistor in 1947 meant that much smaller, low-powered devices could be developed. A wide variety of electronic devices such as hi-fi units and portable radios became common in the home.

It was not until 1958 that microelectronics began with the development of ICs (integrated circuits) on silicon chips. This led to a great increase in the use of electronics in everyday items. The introduction of the microprocessor allowed electronics to be used for the control of many common processes.

Microprocessors are now used to control many household items such as automatic washing-machines, dishwashers, central heating systems, sewing machines, and food processors. Electronic timers are found in digital alarm clocks, water heaters, electric cookers, and microwave ovens.

Telephones use electronics to provide automatic dialling and answerphone facilities. New entertainment devices have been developed, such as video recorders and CD (compact disc) players.

In the future, electronics are likely to become even more common in the home as multimedia entertainment systems and computer-controlled robots are developed.

Дата добавления: 2014-12-17