History of Mobile Phones
The Hstory of Mobile
Phones charts the development of devices which connect wirelessly to the public
switched telephone network. The transmission of speech by radio has 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. Hand-held radio transceivers have been available
since the 1940s. Mobile telephones for automobiles became available from some
telephone companies in the 1940s. Early devices were bulky and consumed high
power and the network supported only a few simultaneous conversations. Modern
cellular networks allow automatic and pervasive use of mobile phones for voice
and data communications.
In the United States, engineers from Bell Labs began work on a system to allow mobile users to place and receive telephone calls from automobiles, leading to the inauguration of mobile service on June 17, 1946 in St. Louis, Missouri. Shortly after, AT&T offered Mobile Telephone Service. A wide range of mostly incompatible mobile telephone services offered limited coverage area and only a few available channels in urban areas. The introduction of cellular technology, which allowed re-use of frequencies many times in small adjacent areas covered by relatively low powered transmitters, made widespread adoption of mobile telephones economically feasible. The advances in mobile telephony can be traced in successive generations from the early "0G" services like MTS and its successor Improved Mobile Telephone Service, to first generation (1G) analog cellular network, second generation (2G) digital cellular networks, third generation (3G) broadband data services to the current state of the art, fourth generation (4G) native-IP networks. |
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Android (Operating System)
Android is a Linux-based operating system designed primarily for touchscreen mobile devices such as smartphones and tablet computers, developed by Google in conjunction with the Open Handset Alliance.[2] Initially developed by Android Inc, whom Google financially backed and later purchased in 2005,[9] Android was unveiled in 2007 along with the founding of the Open Handset Alliance, a consortium of 86 hardware, software, and telecommunication companies devoted to advancing open standards for mobile devices.[10]
Google releases the Android code as open-source, under the Apache License.[11] The Android Open Source Project (AOSP), lead by Google, is tasked with the maintenance and further development of Android.[12] Additionally, Android has a large community of developers writing applications ("apps") that extend the functionality of devices. Developers write primarily in a customized version of Java,[13] and apps can be downloaded from online stores such as Google Play (formerly Android Market), the app store run by Google, or third-party sites. In June 2012, there were more than 600,000 apps available for Android, and the estimated number of applications downloaded from Google Play was 20 billion.[14]
The first Android-powered phone was sold in October 2008,[15] and by the end of 2010 Android had become the world's leading smartphone platform.[16] It had a worldwide smartphone market share of 59% at the beginning of 2012,[17] and as of third quarter 2012, there were 500 million devices activated and 1.3 million activations per day.[18][19]
What is Android
Operating Systems have developed a lot in last 15 years. Starting from black and white phones to recent smart phones or mini computers, mobile OS has come far away. Especially for smart phones, Mobile OS has greatly evolved from Palm OS in 1996 to Windows pocket PC in 2000 then to Blackberry OS and Android.
One of the most widely used mobile OS these days is ANDROID. Android is a software bunch comprising not only operating system but also middleware and key applications. Android Inc was founded in Palo Alto of California, U.S. by Andy Rubin, Rich miner, Nick sears and Chris White in 2003. Later Android Inc. was acquired by Google in 2005. After original release there have been number of updates in the original version of Android.
Google releases the Android code as open-source, under the Apache License.[11] The Android Open Source Project (AOSP), lead by Google, is tasked with the maintenance and further development of Android.[12] Additionally, Android has a large community of developers writing applications ("apps") that extend the functionality of devices. Developers write primarily in a customized version of Java,[13] and apps can be downloaded from online stores such as Google Play (formerly Android Market), the app store run by Google, or third-party sites. In June 2012, there were more than 600,000 apps available for Android, and the estimated number of applications downloaded from Google Play was 20 billion.[14]
The first Android-powered phone was sold in October 2008,[15] and by the end of 2010 Android had become the world's leading smartphone platform.[16] It had a worldwide smartphone market share of 59% at the beginning of 2012,[17] and as of third quarter 2012, there were 500 million devices activated and 1.3 million activations per day.[18][19]
What is Android
Operating Systems have developed a lot in last 15 years. Starting from black and white phones to recent smart phones or mini computers, mobile OS has come far away. Especially for smart phones, Mobile OS has greatly evolved from Palm OS in 1996 to Windows pocket PC in 2000 then to Blackberry OS and Android.
One of the most widely used mobile OS these days is ANDROID. Android is a software bunch comprising not only operating system but also middleware and key applications. Android Inc was founded in Palo Alto of California, U.S. by Andy Rubin, Rich miner, Nick sears and Chris White in 2003. Later Android Inc. was acquired by Google in 2005. After original release there have been number of updates in the original version of Android.
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TECHNOLOGY-All That Matters Today
The most powerful thing today is 'INFORMATION' and technology is the carrier of all this to all of us... This simply means TECHNOLOGY is the most important thing today... so here I will make post primarily about technical help, my current (own)work & of course cutting edge tech issues... So stay tuned...!
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