History of mobile phones

History of mobile phones

A mobile phone (also called mobile, cellular phone, cell phone, or хэнд phone) is an electronic device used for full duplex two-way radio telecom­munications over a cellular network of base stations known as cell sites. Mo­bile phones are sure to differ from cordless telephones, which only History of mobile phones offer tel­ephone service within limited range through a single base station attached to a fixed landline, for example, within a home or an office.

Radiophones have a long and varied history. It goes back to Reginald Fessenden’s invention and shore-to-ship demonstration of radio telephony through the Second World History of mobile phones War with military use of radio telephony links and civil services in the 1950s.

In 1960 the world’s first partly automatic car phone system, Mobile System A (MTA) was launched in Sweden. MTA phones were composed of vacuum tubes and relays, and had a weight of 40 kg. In 1962 a History of mobile phones more modern version called Mobile System В (MTB) was launched. It was a push-button telephone, which used transistors in order to enhance the telephone’s calling capacity and improve its operational reliability. In 1971 the MTD version was launched, opening for several different brands of equipment History of mobile phones and gaining commercial success.

The first commercially automated cellular network (the 1G — first gen­eration) was launched in Japan in 1979. Within five years the network had been expanded to cover the whole population of Japan and became the first nation-wide 1G network. This was followed by the simultaneous launch History of mobile phones of the Nordic Mobile Telephone (NMT) system in Denmark, Finland, Norway, and Sweden. NMT appeared to be the first mobile phone network featuring international roaming. The first network technology on digital 2G (second generation) cellular technology appeared in Finland on the GSM standard. One of the newest 3G technologies to be History of mobile phones implemented is mobile telephony communications protocol in the High-Speed Packet Access (HSPA) family. It allows networks based on Universal Mobile Telecommunication System (UMTS) to have higher data transfer speeds and capacity.

Задание 2. Поставьте глагол в скобках в подходящем времени, соблюдая правила образования условных предложений

1. The trains all (stop History of mobile phones)…………………….if it snowed heavily. 2. If you (go out)…………in cold weather without a coat, you would catch a cold. 3. If I saw a cheap second-hand car, I (buy)……….. it. 4. If you ate well and exercised regularly, you (live)……………to be 100 years old. 5. You would have a bad stomach History of mobile phones if you (eat)……………too much of that cake. 6. If it (rain)………..this afternoon, I (take) ………………my umbrella. 7. If you didn’t drive carefully, you (have)…………….an accident. 8. If you (study)……………..for a higher qualification, you (get) …………. a better job next year. 9. If you sent the letter by first class mail History of mobile phones, it (get) ………….there the following day.

Задание 3. Поставьте глагол в скобках в Future Simple, Future Continuous, Future Perfect

1. We (have) a party next Sunday. 2. We (have) a party from seven to ten next Sunday. 3. I think I (read) a new article tomorrow. 4. He (work) from 8 to 9 p.m. on History of mobile phones Saturday. 5. At this time tomorrow I (swim) in the river. 6. I (check) my home exercise tomorrow. 7. I (finish) a composition by 8 o’clock in the evening. 8. We (have) lunch by 3 o’clock and then we will go for a walk. 9. We (build) our country house next year. 10. The History of mobile phones pupils of our class (visit) the Tretyakov Gallery next Sunday.

Задание 4. Поставьте глагол в скобках в подходящем времени, используя правила согласования времен в британском языке

1. It was decided that we (start) our work at eight o’clock. 2. I told you that I (leave) for Minsk on the following day History of mobile phones. 3. The boy didn’t know that he already (receive) a good mark. 4. He wanted to know what (become) of the books. 5. The visitors were told that the secretary just (go out) and (come back) in half an hour. 6. He said we (may) keep the books. 7. We thought that she not (be able History of mobile phones) to make his work in time and therefore (offer) to help her. 8. When I came they (tell) me that he (leave) half an hour before. 9. It was soon clear to the teacher that the control work (be) a difficult one. 10. I decided that next year I (go History of mobile phones) to see my old friend again. I not (see) him since he (go) to Moscow.

Задание 5. Заполните пропуски модальными глаголами, подходящими по смыслу

1. We … cancel the meeting. The proposals are not ready yet. 2. Sorry I won’t be in Moscow at that time. I … go to Minsk. My parents will celebrate their History of mobile phones fortieth wedding anniversary. 3. You … thank them. They have done so much for you. 4. The shop was losing money, so they … close down. 5. You … exercise every day to keep fit. 6. He is overworking. He really … go to bed earlier. 7. I have a splitting headache. I … take an aspirin History of mobile phones. 8. I know you … do the job because you have knowledge and experience. 9. We told him he … go home. 10. You … drive carefully, it is foggy today.

CONTROL WORK 5

Variant 4

Задание 1. Почитайте и переведите текст. Составьте 5 вопросов по тексту

Uses of radio

Today, radio takes many forms, including wireless networks, mobile communications History of mobile phones of all types, as well as radio broadcasting. Aviation voice radios use VHF AM. Aircraft fly high enough that their transmitters can be received hundreds of miles away, even though they are using VHF. Marine voice radios can use AM in the shortwave High Frequency—3 MHz to 30 MHz. Government, police, fire and History of mobile phones commercial voice services use narrowband FM on special frequencies. Civil and military HF (high frequency) voice services use shortwave radio to contact ships at sea, aircraft and isolated settlements.

Mobile phones transmit to a local cell site that ultimately connects to the public switched telephone network through History of mobile phones an optic fiber or microwave radio and other network elements. When the mobile phone nears the edge of the cell site's radio coverage area, the central computer switches the phone to a new cell. Cell phones originally used FM, but now most use various digital modulation schemes. Satellite phones come History of mobile phones in two types: INMARSAT and Iridium. Both types provide world-wide coverage. INMARSAT uses geosynchronous satellites, with aimed high-gain antennas on the vehicles. Iridium uses 66 Low Earth Orbit satellites as the cells.

Television sends the picture as AM and the sound as FM, with the sound History of mobile phones carrier at fixed frequency (4.5 MHz in the NTSC system) away from the video carrier. Analog television also uses a vestigial sideband on the video carrier to reduce the bandwidth required.

Radio remote control use radio waves to transmit control data to a remote object as in some early History of mobile phones forms of guided missile, some early TV remotes and a range of model boats, cars and airplanes. Large industrial remote-controlled equipment such as cranes and switching locomotives now usually use digital radio techniques to ensure safety and reliability.

Задание 2. Поставьте глагол в скобках в Present Simple, Present Continuous, Present History of mobile phones Perfect

1. Every day July (take) the bus to go to her office. 2. At the moment you (do) an English exercise. 3. Tom and July (learn) English this year. 4. The Bank (open) at 9.30 every morning from Monday to Friday. 5. Our cousins (come) to see us next Sunday. 6. Om (read) the newspaper every History of mobile phones morning on the train. 7. July usually (clean) the house on Sunday. 8. Doctors (cure – вылечивать) many deadly disease. 9. English (become) one of the most popular courses at the university. 10. I think I (see) that movie before.

Задание 3 Поставьте глагол в скобках в Passive Voice

1. The bomb…(hear) 5 miles away. 2. The History of mobile phones World Cup at football…(win) in 1982. 3. Robert Gibbs, the great plane robber…(arrest) the police yesterday. 4. It …(explain) to us how the accident had happened. 5. The Guinness Book of Records…(publish) in the 50’s. 6. The job …(offer) to Peggy. 7. I could not answer the questions I … (ask) at the History of mobile phones interview last month. 8. My suitcase…(steal) from the hotel room. 9. We… (wake up) by the barking dog last night. 10. There is someone behind us. I think…(follow)

Задание 4. Поставьте глагол в скобках в подходящем времени, используя правила согласования времен в британском языке

1. She asked me if I (enjoy) her dinner History of mobile phones. 2. He said he (be) late that evening. 3. Our children said they (not/ like) school. 4. Liz says she (see) the film. 5. She said that she (be) 20 years old the following Friday. 6. They said that they (never/ be) to Britain before. 7. He boasted that he (can) play different musical instrument. 8. Thomas told History of mobile phones his wife that he (lose) his umbrella on the bus the day before. 9 . He asked me whether he (call) the doctor. 10. The girl said that her name (be) Joan.

Задание 5. Заполните пропуски модальными глаголами (must, should, would, ought to, have to, needn’t, can, could, may)

1. We … cancel the History of mobile phones meeting. The proposals are not ready yet. 2. Sorry I won’t be in Moscow at that time. I … go to Minsk. My parents will celebrate their fortieth wedding anniversary. 3. You … thank them. They have done so much for you. 4. The shop was losing money, so they … close down. 5. You … exercise History of mobile phones every day to keep fit. 6. He is overworking. He really … go to bed earlier. 7. I have a splitting headache. I … take an aspirin. 8. I know you … do the job because you have knowledge and experience. 9. We told him he … go home. 10. You … drive carefully, it is foggy today.

Приложение History of mobile phones 1

Министерство образования Нижегородской области

Государственное экономное образовательное учреждение

высшего образования

«Нижегородский муниципальный инженерно-экономический университет»

(ГБОУ ВО НГИЭУ)

Факультет: экономический

Кафедра: Зарубежные языки

Контрольная работа

по дисциплине «Иностранный язык»

(британский)

Вариант ___

Выполнил:

студент группы 16ИЗ,

заочной формы обучения

факультета ИТиСС

________________

(ФИО)

Проверил:

к.п.н., доцент Гненик М. Е.

____________

(подпись)

г. Княгинино

Приложение 2

Перечень справочной литературы:

1. Британский язык History of mobile phones в области компьютерной техники и технологий =Professional English for Computing : учебное пособие / Л.В. Квасова, С.Л. Подвальный, О.Е. Сафонова. — 3-е изд., стер. — М. : КНОРУС, 2014. —176 с. (библиотека НГИЭУ).

2. Голубев А. П., Британский язык для технических специальностей – М.: Издательский центр «Академия», 2013 г. – 208 с.

3. Крылова, И. П. Сборник упражнений по History of mobile phones грамматике британского языка: Учебное пособие для ин-тов и фак. иностр. яз. – 11-е изд. – М.: КДУ, 2006. – 432 с.

4. Чикилева, Л. С. Британский язык для общественных выступлений. English for public speaking : учеб. пособие для бакалавриата и магистратуры / Л. С. Чикилева. – 2-е изд., испр. и доп. – М. : Издательство Юрайт, 2016. – 209 с. // ЭБС «Юрайт» » [Электронный History of mobile phones ресурс]. – Режим доступа: http://www.biblio-online.ru/book/EE75D77B-0EF8-413A-8FD5-FBAC2F5AF501

Приложение 3


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