Cloud Computing
Nowadays, Cloud Computing is one of the trending technology and it is becoming an essential part for the corporate world. Many companies are shifting from their traditional way to Cloud computing . In this article I will answer some simple questions about Cloud computing i.e. "Why Cloud Computing?", "What is Cloud Computing ?", "How Cloud Computing works ?". In the End is the list of Top 10 service provider of Cloud computing of 2012.
Why Cloud Computing ?
Cloud is an optimal option when it comes to data sharing, that is why is use in industries is increasing on the fast pace.
1. It bring down the IT operational cost. Reduced cost of work which means GOOD FOR BUSINESS. Hence Cloud computing making its day under the Sun.
2. Cloud computing provides much greater freedom to share and use the data. As data is present over the internet a user can it anytime and anywhere by using any device (like mobile, tablet, computer etc). Since it require basic hardware structure so the cost of hardware is also reduced.
3. As in business Time is Money, using Cloud computing there is not downtime there is only installation of one application for doing all the work. Hence it maintains everyone in organization on the same page and reduce the time to update and installation of different software for different application, hence reduce maintenance price.
4. Security is most concerned issue in industries, which why usage of Cloud computing is increasing at the good rate because it provide more security than scattered network.
5.Ease of Access and Ease of Use, both the things are loved by the industries and clouds provides these in very organized way that why clouds are working.
So many benefits and only few downsides, so Cloud Computing is a good choice for IT operations.
What is Cloud computing ?
According to the name "Cloud computing ", ' Cloud ' specify the representation of the complex network as a Cloud in the system network diagram and ' Computing ' simply suggest that the art of doing some work, mainly with computers.
All work is done by Web based service. Cloud computing run through Interface software. The Third party servers holds all the information software, your saved data and most important security.
How it Works ?
Cloud computing setup can be describes as two ends "Front end" and "Back end". Front end is the user or the IT organization which have the Interface software like custom programs, word processing, etc, and their licenses. Back end is the other end which is cloud provider.It is the network application servers and database storage. These cloud provider have all the hardware having capability of doing any work of any kind of application required by the user.
Concerns of the Cloud computing
1. User does not physically have the data with them, everything on the cloud.
2. Risk of hacking of the Storage.
3. All work become reliable on the Internet speed.
4. More Knowledge is required for implementing and managing clouds.
List of top 10 Cloud computing providers of 2012
9. Microsoft
8. Bluelock
7. Citrix
6. Joyent
5. Terremark/ Verizon
4. Salesforce.com
3. CenturyLink / Savvis
2. Rackspace
1. Amazon web services
Amazon web services is on the Top of the all the service providers this year. It is the dominant public provider of the cloud worldwid
- Microchip has developed a capacitive contact less identification system that relies on near-field effects around the human body.
A $1 fob or token, carried about a person, sets up a field that extends to the wearers fingertips, allowing them to prove they are the carrier by reaching their hand towards a reader.
Branded Body Com, no license fees are payable providing it is implemented with the firm's chips.
"This is not NFC, which is magnetic near-field communications. It is based more on the e-field. We use conductive pads which form a capacitor," Microchip business development manager Lucio Di Jasio told Electronics Weekly. "The idea is just to carry a Body Com token. You don't have to push a button. It can be in a shoe, a helmet, a purse or a pocket."
The aim of the development was to transfer a few bytes of identification data with cheap components, with as much cost as possible transferred from the tokens.
As such, the token has only an 8bit micro controller (a PIC16LF1827 in the evaluation circuit), an RF receiver, and an RF power amplifier (a CMOS inverter) feeding a flat plate aerial through an LC filter. One flat plate on each side of the token means that either can face the body, while the other couples to earth.
The micro amp supply current RF receiver chip is an existing Microchip design: the MCP2035/2030 range originally developed for passive keyless car entry systems. Input sensitivity is 1mVp-p and modulation down to 8% can be detected.
"Token battery life is 2-3 years," said Di Jasio. "The system has been in use in Microchip's Milan office for two years."
As the receiver chip is optimised for operation around 125kHz, this has become the de facto frequency for basestation to token communications.
Token to basestation communication is at 8MHz, chosen, according to Di Jasio, because it is the clock frequency generated by the RC clock oscillator built into many PICs. The RC oscillator is sufficiently stable for the system, he added.
The receiver uses a PIC16LF1829 in the demonstrator, with a mixer taking the 8MHz to around 125kHz for a 2035 to provide amplification there as well.
"A basestation cost can be as low as $2, said Di Jasio.
The firm has chosen it existing KeeLoq protocol for identity confirmation.
Around the body, "electromagnetic fields are 80dB below minimum allowed by the FCC", said Di Jasio.
Using a 5x5cm flat plate basestation antenna, the hand of a person will pick up sufficient energy to wake their token at 15cm range, said De Jasio, and to complete the identification transaction at 2cm.
"2cm is deliberately short for security. It is a trade-off between security and convenience," he said.
There is a development kit (DM160213), an application note, and V1.0 of the development framework can be downloaded.
"If you follow our framework specification, we have the patents and you need no other intellectual property," said Di Jasio. 
