手机的发展英语介绍英文怎么说
❶ 关于智能手机的发展历史英语说明文
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The history of mobile phones begins with early efforts to develop radio telephone technology and from two-way radios in vehicles and continues through emergence of modern mobile phones and associated services.
Radiophones have a long and varied history going back to Reginald Fessenden's invention and shore-to-ship demonstration of radio telephony, through the Second World War with military use of radio telephony links and civil services in the 1950s, while hand-held mobile radio devices have been available since 1973. Mobile phone history is often divided into generations (first, second, third and so on) to mark significant step changes in capabilities as the technology improved over the years.
Contents [hide]
1 Pioneers of radio telephony
2 Emergence of commercial mobile phone services
3 First generation: Cellular networks
4 Second generation: Digital networks
5 Third generation: High speed IP data networks
6 Growth of mobile broadband and the emergence of 4G
7 Patents
8 See also
9 Notes
10 References
11 External links
[edit] Pioneers of radio telephony
In 1908, U.S. Patent 887,357 for a wireless telephone was issued to Nathan B. Stubblefield of Murray, Kentucky. He applied this patent to "cave radio" telephones and not directly to cellular telephony as the term is currently understood.[1]
In 1910 Lars Magnus Ericsson installed a telephone in his car, although this was not a radio telephone. While travelling across the country, he would stop at a place where telephone lines were accessible and using a pair of long electric wires he could connect to the national telephone network.[2]
In Europe, radio telephony was first used on the first-class passenger trains between Berlin and Hamburg in 1926. At the same time, radio telephony was introced on passenger airplanes for air traffic security. Later radio telephony was introced on a large scale in German tanks ring the Second World War. After the war German police in the British zone of occupation first used disused tank telephony equipment to run the first radio patrol cars.[citation needed] In all of these cases the service was confined to specialists that were trained to use the equipment. In the early 1950s ships on the Rhine were among the first to use radio telephony with an untrained end customer as a user.
Two-way radios (known as mobile rigs) were used in vehicles such as taxicabs, police cruisers, and ambulances, but were not mobile phones because they were not normally connected to the telephone network. Users could not dial phone numbers from their vehicles. A large community of mobile radio users, known as the mobileers, popularized the technology that would eventually give way to the mobile phone. Originally, mobile two-way radios were permanently installed in vehicles, but later versions such as the so-called transportables or "bag phones" were equipped with a cigarette lighter plug so that they could also be carried, and thus could be used as either mobile or as portable two-way radios. During the early 1940s, Motorola developed a backpacked two-way radio, the Walkie-Talkie and later developed a large hand-held two-way radio for the US military. This battery powered "Handie-Talkie" (HT) was about the size of a man's forearm.
In 1946 soviet engineers G. Shapiro and I. Zaharchenko successfully tested their version of a radio mobile phone mounted inside a car. The device could connect to local telephone network with a range of up to 20 kilometers.
Top of cellular telephone towerIn December 1947, Douglas H. Ring and W. Rae Young, Bell Labs engineers, proposed hexagonal cells for mobile phones in vehicles.[3] Philip T. Porter, also of Bell Labs, proposed that the cell towers be at the corners of the hexagons rather than the centers and have directional antennas that would transmit/receive in three directions (see picture at right) into three adjacent hexagon cells.[4] The technology did not exist then and the frequencies had not yet been allocated. Cellular technology was undeveloped until the 1960s, when Richard H. Frenkiel and Joel S. Engel of Bell Labs developed the electronics.
During the 1950s the experiments of the pioneers started to appear as usable services across society, both commercially and culturally. In the 1954 movie Sabrina, the businessman Linus Larrabee (played by Humphrey Bogart) makes a call from the phone in the back of his limousine.
In 1957 young Soviet radio engineer Leonid Kupriyanovich from Moscow created the portable mobile phone, named after himself as LK-1 or "radiophone".[5] This true mobile phone consisted of a relatively small-sized handset equipped with an antenna and rotary dial, and communicated with a base station. Kupriyanovich's "radiophone" had 3 kilogram of total weight, could operate up to 20 or 30 kilometers, and had 20 or 30 hours of battery lifespan. LK-1 and its layout was depicted in popular Soviet magazines as Nauka i zn, 8, 1957, p. 49, Yuniy technik, 7, 1957, p. 43–. Engineer Kupriyanovich patented his mobile phone in the same year 1957 (author's certificate (USSR Patent) # 115494, 1.11.1957). The base station of LK-1 (called ATR, or Automated Telephone Radiostation) could connect to local telephone network and serve several customers.
In 1958, Kupriyanovich resized his "radiophone" to "pocket" version. The weight of improved "light" handset was about 500 grams.
In 1967, each mobile phone had to stay within the cell area serviced by one base station throughout the phone call. This did not provide continuity of automatic telephone service to mobile phones moving through several cell areas.
In 1969, a patent for a wireless phone using an acoustic coupler for incoming calls was issued in US Patent Number 3,449,750 to George Sweigert of Euclid, Ohio on June 10, 1969. Dialing a number for outgoing calls was not provided.
The concepts of frequency reuse and handoff, as well as a number of other concepts that formed the basis of modern cell phone technology, were described in the 1970s. In 1970 Amos E. Joel, Jr., another Bell Labs engineer,[6] invented an automatic "call handoff" system to allow mobile phones to move through several cell areas ring a single conversation without loss of conversation. Also Fluhr and Nussbaum,[7] Hachenburg et al.[8] , and U.S. Patent 4,152,647, issued May 1, 1979 to Charles A. Gladden and Martin H. Parelman, both of Las Vegas, Nevada and assigned by them to the United States Government.
❸ 英语作文关于手机的发明介绍80字还要带语文翻译
My
favorite
inventionIn
our
life,there
are
many
great
inventions,such
as
the
light,the
pencil,the
bag...At
the
age
of
6,my
father
brought
a
car,he
took
me
to
school
on
the
first
day
of
school.It
was
so
exciting.I
fell
in
love
with
this
invention
on
that
day.The
car
can
go
anywhere
and
save
time,but
it
also
pullutes
our
environment.I
holp
I
can
invent
"clean"
cars.I
hope
the
cars
will
enter
every
family,and
I
love
cars
best.翻译我最喜欢来的发明在源我们的生活中,有许多伟大的发明,如光、铅笔、包……6岁时,我父亲用一辆车,带我在去学校的第一天.这是如此令人兴奋.那天我爱上了这项发明.汽车可以去任何地方,节省时间,但它也污染我们的环境.我帮助我能发明“干净”的汽车.我希望汽车将进入每一个家庭,我最喜欢的汽车.
❹ 英语作文,手机的发展史80词
The Development Of Mobile Phone
Imperceptibly mobile phone into our life has been more than 30 years. As peoples living standards improve mobile phone has graally from the luxury development up to now has become very popular consumer electronic procts. Review of mobile phone development p p p process whether from the appearance or function have turn the world upside down changes. Mobile phone development is also passed through a time change before the formation of the now variety of shapes a variety of functions rather than a single communication tools.The worlds first mobile phone
❺ 手机的发明英语作文
The Telephone
The telephone is one of the most welcome and useful inventions. No wonder more and more families have got to use their own telephones today.
The telephone makes things easy in many ways. Especially, after the mobile telephone appears, communication becomes easier and rapider. To students and people going out for business far away from their homes, the telephone can shorten the distance between them and their families. Thus they will get comfort whenever they are homesick or they run into trouble. With the help of the telephone, people can keep in touch with anyone at any time and in any place for urgent help.
All in all, the telephone is so helpful that we can say that nowadays we can not live without the telephone in our daily life. We will further improve the performance of the telephone so as to create better conditions for its development.
电话
电话是目前最受欢迎和最有用的发明之一,怪不得越来越多的人已经使用了自己的电话.
电话在许多方面使事情变得简单,尤其是在移动电话出现以后,通讯变得更加快捷方便.对于那些离家的学生和做生意的人来说,电话缩短了同家人的距离,在此它能蛤想家的人和处在困难中的人一个好的心情.有了电话帮助,人们可以随时随地和任何人联系,寻求紧急帮助.在这种情况下,电话显得尤其重要.
总之,电话是如此有用,以至于如今的日常生活离不开它.我们逐步提高电话功能,为它的发展创造更好的条件.
❻ 手机的发明历史 英语作文
I think mobile photos are the most use for inventions . We can't life without mobile phones . They was invente by Martin Cooper .The were invente in 1973 .They used to very big ,and heavy .But now great changes have taken place .They are very small and thin .Mobile phones didn't appear in China until 1987.They are used for talking with friends. They are used for playing games.They are used for surf the Internet.
❼ 手机英文介绍
The Sony Ericsson W850i mobile phone isn’ just a Walkman™ music player. It’s a camera phone, video phone, a radio and a web browser, keeping you in touch and entertained on the move.
Everything you need for music is included. The W850i comes with a stereo headset and a 1GB memory card, capable of holding 1000 songs, along with a USB cable and software for transferring tunes from your PC to the phone. If you’re looking for more music, the Walkman player can connect you to an online music store. There’s also a clever identification service that’ll track down the name and artist of any unknown song you hear on the radio.
Take a break from music and discover the phone’s two megapixel camera. The main camera has a 4x digital zoom for taking photos and recording videos, while a second camera on the front lets you make and receive video calls.
In addition the Sony Ericsson W850i offers web access, email, RSS internet news feeds and a selection of games.
Enjoy the wide variety of features packed into this stylish slide-open 3G handset!
Rip up to 1000 tracks to your phone and listen to music on the move!
See who you are calling with two-way video calls
The large colour display makes viewing websites and multimedia a pleasure
Browse the internet for original album art to find the song you want
Review e-mails and attachments with a built-in e-mail client
Exchange images and other media via Bluetooth™
Sony Eric. W850I Mobile Phone Key Features
Two-way video calling compatible
2 megapixel camera with digital zoom
Multimedia player
High-resolution 262K colour display
Built-in e-mail client
Bluetooth™
Sony Eric. W850I Mobile Phone Full Features
Infra-red
Quad-band
Organiser
Voice memo
RSS feeder
WAP 2.0/HTML
Vibrating alert
Bluetooth™
FM Radio with RDS
Ringtone composer
Downloadable games
Predictive text input
Java™ compatible
Downloadable ringtones
Front facing VGA camera
Video recorder and player
Stylish, slide open design
Total internal memory of 1GB
MP3 and polyphonic ringtones
Two-way video calling capability
TrackID™ music recognition
USB port (fast PC synchronisation)
Short Message Service (SMS) Compatible
Advanced Walkman™ 2.0 music player
High speed mobile internet with RSS feeds
262K TFT colour display (240 x 320 pixels)
Expandable via Memory Stick PRO Duo™
E-mail client with inbox, outbox and compose
Multimedia Messaging Service (MMS) compatible
General packet radio service (GPRS class 10) compatible
Multimedia player: stream, download and play multimedia files
PlayNow™ for downloading music, games videos and images
2 megapixel camera (1600 x 1200 pixels) plus flash & digital zoom
Sony Eric. W850I Mobile Phone Specification
Dimensions:
98 x 47 x 21 mm
Weight:
116g
Standby Time:
Up to 350 hours
Talk Time:
Up to 7 hours 30 mins
❽ 用英语介绍手机
智能手机
Intelligent mobile phone, refers to such a personal computer, which has an independent operating system, independent operation space, can by the user to install the software, games, navigation and three party service provider, and can be achieved through the mobile communication network. The wireless network access type mobile phone.
Use a range of intelligent mobile phone [1] has covered the whole world, but not everyone knows with the use of intelligent mobile phone operating system, because has the excellent free installation of various types of software (only Android system), complete screen operation full touch screen type of these three characteristics, so the end of the keyboard type mobile phone a few years ago the.
Google (Google), apple, Samsung, NOKIA, HTC (Hondar electric) the five brands in the world the most widely known, and millet (Mi), HUAWEI (HUAWEI), Meizu (MEIZU) (Lenovo), Lenovo, ZTE, Coolpad (ZTE) (Coolpad), plus a mobile phone (oneplus), Jin (GIONEE), Tian Yu (Amagatarai, K-Touch) and other brands have attracted much attention in Chinese.
The extreme condition tests show that the intelligent mobile phone will not only in the summer because of overheating and automatically closed, will automatically shut down by extreme cold.
望采纳，谢谢！
❾ 这周我们学校用英语手机的发展历史,这句话用英语怎么说
这句汉语都读不通还要怎样翻译成英语？ 先把汉语说通顺了行吗