simply BLUETOOTH

I think all of us the readers of this blog are already famliar with bluetooth technology. We must have used it in various electronics equipments like cell-phones, laptops, cameras, bluetooth headset, Wireless sets and also in some wireless keyboards and mouses too. We all know that bluetooth is very useful mean of data communication for short range and is very useful in portable devices. Then what actually is this Bluetooth? How does it transfers data then?? Lets have a look…

Bluetooth is a proprietary open wireless technology standard for interchanging data over short range of distance from fixed and mobile devices, creating Personal Area Network (PAN) with high level of security. It was originally created in 1994 by Telecom Vendor “Ericsson” as an alternate to RS-232 device.(RS-232 is the traditional name for a series of standards for serial binary single-ended data and control signals connecting between a DTE (Data Terminal Equipment) and a DCE (Data Circuit terminating Equipment)) But since 1998, it is managed by Bluetooth Special Interest Group (SIG). SIG has more than 15,000 member companies in the areas of telecommunication, computing, networking, and consumer electronics.Bluetooth is designed in such a way that it can be used by general public. Design-wise, the three main goals for Bluetooth were: small size, minimal power consumption, and low price. The technology was designed to be simple, and the target was to have it become a de facto standard in wireless connectivity. Bluetooth is available in several version according to its speed of Data transfer.

Bluetooth V 1.0

1. Bluetooth v 1.0 and v 1.1 : This were early versions wit lots of bugs in it. Thus this is no more available.
2. Bluetooth v 1.2 : This transfers data at the rate of 1 Mbps (theoretically) and 712 Kbps practically. This is back compatible with v 1.1 and also has improved resistance to Radio frequency Interference.
3. Bluetooth v 2.0 : The main achievement is the introduction of an Enhanced Data Rate (EDR) in this version. This made the transfer rate rise up to 3 Mbps.
4. Bluetooth v 2.1 : This version is a little improved version of v 2.0 and too had EDR, and is also fully backward compatible with v 1.2. It also introduced Extended inquiry response (EIR), which provides more information during the inquiry procedure to allow better filtering of devices before connection. but the speed is fairly similar as of v 2.0.
5. Bluetooth v 3.0 : Bluetooth 3.0 supports theoretical data transfer speeds of up to 24 Mbps as it is introduced as HS(High Speed) version.
6. Bluetooth v 4.0 : The Bluetooth SIG completed the Bluetooth Core Specification version 4.0, which includes Classic Bluetooth, Bluetooth high speed and Bluetooth low energy protocols. Bluetooth high speed is based on Wi-Fi, and Classic Bluetooth consists of legacy Bluetooth protocols. This version has been adopted as of June 30, 2010.

Block Diagram:

Figure 1: Block Diagram of Bluetooth system

Bluetooth Radio: Its main function is to transmit and receive data.

Link Controller: It sends and receives data, identifies the sending device, performs authentication etc

Link Manager: It manages the activity of link controller.

Bluetooth communicates via low power radio waves on a frequency of 2.4GHz to 2.48GHz. The range of Bluetooth depends on the power class of of the radio used. Mailnly, there are three class of bluetooth radio.

• Class 1: Range upto 100 metres
  
• Class 2: Range upto 10 metres
• Class 3: Range upto 1 metre

Most of the devices found around us in mobile equipments uses class 2 bluetooth radio. 

How does it works then?? 

Bluetooth is packet based protocol with master slave structure.  When a device comes within the range of another, the device automatically converses and form a network. The PAN(Personal Area Network) of bluetooth is known as Piconet. The connection initiating device is considered as master and another as slave. A master can communicate with 7 other devices at a time. Once piconet is established, the members hop(transmission of packets of data in different frequencies) in unison and each other are synchronized with each other. Normally in most of the countries hopping is possible in 79 different frequency channels. Since one device can participate in several piconets i.e. being a slave in one and master in another, interlacing of pattern occurs. This is known as Scatternet. A scatternet supports upto 10 diffferent piconets to be connected at time. 

 Figure 2: Bluetooth piconet and scatternet scenarios:

                                      a) Point-to-point connection between two devices.
                                      b) Point-to-multipoint connection between a master and three slaves.
                                      c) Scatternet that consists of three piconets.

How Bluetooth connection occurs??

Bluetooth connection strictly follows a series of steps to ensure high security in data transmission.

• Initially, the device stays in passive state i.e. being connected with network but  without any activity.
• The master sends an enquiry request to all the devices. the devices respond with their address.
• The master chooses a device and synchronises with access point in clock and frequency.
• A link is estalished and master enters the access point using Service Discovery Protocol.(SDP).
• Master device creates channel with that access point.
• Sometimes for security, pairing is performed in order to restrict accessto authorised uses only by using an encrypted key called Personal Identification Number(PIN). 

Applications:

 Based upon usage model for bluetooth technology to facilitate its applications, several profiles are created so hat communication takes place smoothly. some such profiles are Headset Profile(HSP), Human Interface Device Profile(HID), File Transfer Profile(FTP), Audio/Video Remote Control Profile(AVRCP) etc. Some other applications are:

• Data communication between Cell phones 
• Data communication between PC to PC 
• Wireless Controls
• Short range Networking  

Advantages :

• Simple and secure connection
• no effect of noise
• highly secure for privacy concerns
• reliable
• easy to set up in small size products
• economical
• minimal power consuming

This was all that I could share with you. Hope you understood this technology. For futher more about it you may comment or may personally mail me. I'm always there to help you.So lets start exploring more about it and to the Engineering friends who are planning to use bluetooth in your project work, I wish you all the best for your success.

References:

http://en.wikipedia.org/wiki/Bluetooth

http://www.forums.nokia.com/

Be the first to know Li-Fi among your colleauges.

Li-Fi, just listening the name you may think I've gone mad so I'm trying to change name of Wi-Fi and describing it in funny way or I'm trying to make some new funny meaning of Wi-Fi as per my desire. If so then let me tell you that you are completely wrong. Li-Fi is not any extra and funny name given for Wi-Fi, but it is the new version of Wi-Fi which is more upgraded and is more economical. It is the technology which communicates via visible spectrum of light.

Li-Fi(Light Fidelity) is a new technology of wireless data communication using LED lighting. In general I call it fiber optics communication which communicates without fiber. Doesn't it sounds cool?? Let me explain you more in depth about it.

Li-Fi term was first used by Professor Harald Haas in his TED talk on the topic of Visible Light Communication. (Professor Haas is the professor of Mobile Communications, School of Engineering/Institute of Digital Communications, University of Edinburgh.) His research created the technology that can transfer vast quantities of information across a spectrum 10,000 times wider than the radio frequency spectrum. As it was revieled on August 2011, it has been the subject which everyone is curious about. The technology was demonstrated at the Consumer Electronics Show 2012 in Las Vegas using a pair of Casio smartphones to exchange data using light of varying intensity given off from their screens, detectable at a distance of up to ten metres. Till now Reserchers have got only speed of 500Mbytes per second but they believe that it is possible to achieve very high speed about 10 Gbps(theoritically) data transmission via Li-Fi. If it can transfer 10Gbps theoritically, then it may have practical speed of about 6 Gbps. If so then lets just imagine, how fast would our Internet perform?

How does it work then??

The heart of this technology is Light Emitting Diodes (LED). The transmission works on very general principle. if the LED is "ON", then the data signal is 1, else 0. Very fast switching of LEDs can produce an array of data using 1s and 0s. It is possible to encode data in the light by varying the rate at which the LEDs flicker on an off to give different strings of 1s and 0s. The modulation is so fast that the human eye doesn’t notice. In this way the transmission of data takes place in Li-Fi technology.

Advantages:

• It can solve the problems due to limitations of band-width.
• It can allow internet access to such places where traditional radio based wireless isn’t allowed such as aeroplane, military fields etc
• Visible light has 10,000 times the spectrum of radio frequencies allowing faster data with far higher volumes in a single data stream. 
• By fitting a regular LED bulb with a microchip, it can act as Li-Fi transmitter/receiver, so it can be used widely by general public.
• One last advantage mentioned by Prof. Haas was that data can be secured given the fact that light can be contained within opaque walls.

So, as a whole this technology seems to be very useful technology. Since it uses the visible light spectrum, it seems to be eco-friendly too. And the most important thing is, it may meet our desire of having high speed data transmissions. Personally, I think this technology can bring a new era in this world of internet. I wish all the best for Professor Haas and his team for further success of it.

I hope you all got some knowledge about this new technology. If you liked the blog, plz share it, else plz reply me. I'll try to remove the mistakes in my next blogs.

References:

http://the-gadgeteer.com/2011/08/29/li-fi-internet-at-the-speed-of-light/

http://www.12-25life.com/blog/2011/08/05/li-fi/

http://en.wikipedia.org/wiki/Li-Fi

http://www.google.com/

What is Robotics?????????

          As all of us might have heard this word ROBOTICS, but many of us doesn’t know the actual meaning of it. So, in order to explain about What ROBOTICS is all about, I’ve written this blog. I hope this blog will be helpful for you to understand the Real Robotics.

Robotics is simply the branch of technological science which deals all about the ROBOTS and their mechanism. But the question arising here is “What is ROBOT??” then...

Many of us think that Robot is machine like Human(due to movies impact like Terminator, Transformers, Robot, RA-One etc) but it is not true.. ROBOTS  are simply the machines that can perform certain tasks.  But in technical terms , a Robot may be defined as a device which has a movable mechanism, influenced by sensing, planning, actuation and control components. Nowadays Robots are getting huge popularity in world. Various types of Robots have been designed for different tasks. Especially, Robots are getting this popularity due to its high consistency and operating ability in extreme environment.

According to the Oxford English Dictionary, the word robotics was first used in print by Isaac Asimov, in his science fiction short story "Liar!", published in May 1941 in Astounding Science Fiction. Robotics is based on the word "robot" coined by science fiction author and Nobel Prize winner Karel Čapek in his 1920 theater play R.U.R. (Rossum's Universal Robots, in Czech Rossumovi univerzální roboti). The word robot comes from the word robota meaning "self labor", and, figuratively, "drudgery" or "hard work" in Czech and Slovak. The origin of the word is the Old Church Slavonic rabota "servitude" ("work" in contemporary Russian). Asimov was unaware that he was coining the term for a new field -- as the design of electrical devices is called electronics, so the design of robots could be appropriately called robotics.^[3] Before the coining of the term, however, there was interest in ideas similar to robotics (namely automata and androids) dating as far back as the 8th or 7th century BC. In the Iliad, the god Hephaestus made talking handmaidens out of gold.^[4] Archytas of Tarentum is credited with creating a mechanical Pigeon in 400 BC.^[5]

 

Robotics requires a great combination of Electronics, Mechanics and Software. That is why, Robotics Club are established in the various Engineering Colleges. In colleges a wide range of talented people from Mechanical, Electronic and Software field. Although the appearance and capabilities of robots vary vastly, all robots share the features of a mechanical, movable structure under some form of autonomous control. The structure of a robot is usually mostly mechanical and can be called a kinematic chain (its functionality being similar to the skeleton of the human body). The control system of a Robot are prepared by  Electronics components. And finally automatic control of Robots are programmed in a processor(may be combinational circuits or micro-controllers) of Robot. This programming is complete software part but the programming must be performed based upon the Hardware configuration.

Application of Robotics:

               Outer Space - Manipulative arms that are controlled by a human are used to unload the docking bay of space shuttles to launch satellites or to construct a space station. Robots may also be sent to space for research.

·         Exploration - Robots can visit environments that are harmful to humans. An example is monitoring the environment inside a volcano or exploring our deepest oceans. NASA has used robotic probes for planetary exploration since the early sixties.

·         Military Robots - Airborne robot drones are used for surveillance in today's modern army. In the future automated aircraft and vehicles could be used to carry fuel and ammunition or clear minefields. 

·         Farms - Automated harvesters can cut and gather crops. Robotic dairies are available allowing operators to feed and milk their cows remotely.

·         The Vehicle Industry - Robotic arms that are able to perform multiple tasks are used in the vehicle manufacturing process. They perform tasks such as welding, cutting, lifting, sorting and bending.

·         Medical field – Robots are now being used in various surgery where precision is vital. Also Robots are used in diagnosing

·         Disaster Areas - Surveillance robots fitted with advanced sensing and imaging equipment can operate in hazardous environments such as urban setting damaged by earthquakes by scanning walls, floors and ceilings for structural integrity.

·        


 


           Entertinment - Interactive robots that exhibit definite behaviour    and learning ability. SONY has one such robot which moves freely,   plays with a ball and can respond to verbal instructions.

·          






             Education - Nowadays Robots are used to teach students in remote areas.

Sources:
http://www.google.com
http://www.wikipedia.com
http://www.nasa.gov
http://www.melbpc.org.au/pcupdate/2205/2205article10.htm

Kanyam ma Chiya tipne song lyrics (Santosh Gurung)

(Kanyam ma chiya tipne thiti lai,

Soltini vanna mann lagyo)X2

(Soltini saino le bolauda,

chiya tipne thiti risayo..)X2

Kanyam ma chiya …………………..risayo..

 (Pirati launa mann lagyo,

Bolaune mero bahana…

Chiya-bari mathi lutuputu garne,

K cha ni timro chahana???)X2

(Khulla unko gala lai,

Takdacha yo papi aankha le..)X2

(Soltini vanda risaye…..

Bolau ma kun saino le???)X2

(Antu danda ma jhulke ghaam,

Herna lai sangai jaaula…

Dhupi ra salla botai ma,

Dubai ko naam lekhaula…)X2

(Deuta ko thaali bokera,

Pathivara lai dhogera)X2

(Sindur pote le sajhaula,

Bau aama sachhi rakhera….)X4

Singer: Santosh Gurung

Lyricist and Composer: Bashudev Khadka

Arranged by: Gopal Rasaili

Songs Mixed by: Pradeep Joshi

RBT Codes: 0160009731 (NTC), 6059354 (N-Cell), 7734277 (UTL)

Kahile ta timile ni song lyrics (Santosh Gurung)

Kahile ta timile ni, maya lauchau hola…

Kasailai samjhera, timi runchau hola…

Thaha pauchau ani kati garo cha,

Kasaiko maya paunalai….

Dekhauna kati garo cha,

Mutu chiri afno mayalai…..

(Yaad jaba aago bancha,

Kati polcha jalanharu harule..

Maya jaba kaada bancha,

Kati satauchan ghau harule…)X2

Thaha pauchau ani kati garo cha,

Kasaiko mana jitna lai…

Dekhauna kati garo cha,

Pida chopi jhuto haaso lai…

(Rasauda aankha haru,

Aashu lukai hasidinu…

Larbarauda paila haru,

Kahile timi haar na khanu…)X2

Thaha pauchau ani kati garo cha,

Pahilo maya vulna lai…

Nibhauna kati garo cha,

Pirati ka sabai reet haru…

Kahile ta timile ni………………

Singer and Composer: Santosh Gurung

Lyricist: Kiran Gurung

Arranged By: Mohit Munal

Songs mixed by: Sailendra Babu Pradhan

RBT Codes: 0160009730 (NTC), 6059353 (N-Cell), 7734276 (UTL)

Sunsan Raat song lyrics (Santosh Gurung)

Sunsaan Raat, timi ra ma…

Chau ek saath , chodi najau…

Suni rahu mitha yi baat,

Para najau, najik aau…

Hera ti paakha haru ma,

Kati aasha jhulechan…

Hera yi aankha haru ma,

naulo vaaka khojechan…
hamra yi madhur Milan le,
Naya sansar bolaucha…
Hamra yi adhar harule,
Naya gunjan di rahecha…

(Baadal bina ko paani,
ahile kina barsi rahecha
Jati taada janchau timi,
yo man tarsi rahecha…)X2
Tesaile vandaichu ma…
Hera ti paakha haruma………
……… gunjan di rahecha..

(Subash binako phool,
Kina mag-magairahecha…
Yo man ko dhukdhuki ma,
Aandhi chali rahecha...)X2
Tesaile vandaichu ma..
Sunsan raat……………………
………………………gunjan di rahecha…

Singer: Santosh Gurung
Lyricist: Bashudev Munal
Composed and Arrannged by: Mohit Munal
Songs mixed by: Sailendra Babu Pradhan
RBT Codes: 0160007820 (NTC), 6057466 (N-Cell), 7732422 (UTL)

Steve Job's inspirational Speech at Stanford (2005).....

I am honored to be with you today at your commencement from one of the finest universities in the world. I never graduated from college. Truth be told, this is the closest I've ever gotten to a college graduation. Today I want to tell you three stories from my life. That's it. No big deal. Just three stories.

The first story is about connecting the dots.

I dropped out of Reed College after the first 6 months, but then stayed around as a drop-in for another 18 months or so before I really quit. So why did I drop out?

It started before I was born. My biological mother was a young, unwed college graduate student, and she decided to put me up for adoption. She felt very strongly that I should be adopted by college graduates, so everything was all set for me to be adopted at birth by a lawyer and his wife. Except that when I popped out they decided at the last minute that they really wanted a girl. So my parents, who were on a waiting list, got a call in the middle of the night asking: "We have an unexpected baby boy; do you want him?" They said: "Of course." My biological mother later found out that my mother had never graduated from college and that my father had never graduated from high school. She refused to sign the final adoption papers. She only relented a few months later when my parents promised that I would someday go to college.

And 17 years later I did go to college. But I naively chose a college that was almost as expensive as Stanford, and all of my working-class parents' savings were being spent on my college tuition. After six months, I couldn't see the value in it. I had no idea what I wanted to do with my life and no idea how college was going to help me figure it out. And here I was spending all of the money my parents had saved their entire life. So I decided to drop out and trust that it would all work out OK. It was pretty scary at the time, but looking back it was one of the best decisions I ever made. The minute I dropped out I could stop taking the required classes that didn't interest me, and begin dropping in on the ones that looked interesting.

It wasn't all romantic. I didn't have a dorm room, so I slept on the floor in friends' rooms, I returned coke bottles for the 5¢ deposits to buy food with, and I would walk the 7 miles across town every Sunday night to get one good meal a week at the Hare Krishna temple. I loved it. And much of what I stumbled into by following my curiosity and intuition turned out to be priceless later on. Let me give you one example:

Reed College at that time offered perhaps the best calligraphy instruction in the country. Throughout the campus every poster, every label on every drawer, was beautifully hand calligraphed. Because I had dropped out and didn't have to take the normal classes, I decided to take a calligraphy class to learn how to do this. I learned about serif and san serif typefaces, about varying the amount of space between different letter combinations, about what makes great typography great. It was beautiful, historical, artistically subtle in a way that science can't capture, and I found it fascinating.

None of this had even a hope of any practical application in my life. But ten years later, when we were designing the first Macintosh computer, it all came back to me. And we designed it all into the Mac. It was the first computer with beautiful typography. If I had never dropped in on that single course in college, the Mac would have never had multiple typefaces or proportionally spaced fonts. And since Windows just copied the Mac, it's likely that no personal computer would have them. If I had never dropped out, I would have never dropped in on this calligraphy class, and personal computers might not have the wonderful typography that they do. Of course it was impossible to connect the dots looking forward when I was in college. But it was very, very clear looking backwards ten years later.

Again, you can't connect the dots looking forward; you can only connect them looking backwards. So you have to trust that the dots will somehow connect in your future. You have to trust in something — your gut, destiny, life, karma, whatever. This approach has never let me down, and it has made all the difference in my life.

My second story is about love and loss.

I was lucky — I found what I loved to do early in life. Woz and I started Apple in my parents garage when I was 20. We worked hard, and in 10 years Apple had grown from just the two of us in a garage into a $2 billion company with over 4000 employees. We had just released our finest creation — the Macintosh — a year earlier, and I had just turned 30. And then I got fired. How can you get fired from a company you started? Well, as Apple grew we hired someone who I thought was very talented to run the company with me, and for the first year or so things went well. But then our visions of the future began to diverge and eventually we had a falling out. When we did, our Board of Directors sided with him. So at 30 I was out. And very publicly out. What had been the focus of my entire adult life was gone, and it was devastating.

I really didn't know what to do for a few months. I felt that I had let the previous generation of entrepreneurs down - that I had dropped the baton as it was being passed to me. I met with David Packard and Bob Noyce and tried to apologize for screwing up so badly. I was a very public failure, and I even thought about running away from the valley. But something slowly began to dawn on me — I still loved what I did. The turn of events at Apple had not changed that one bit. I had been rejected, but I was still in love. And so I decided to start over.

I didn't see it then, but it turned out that getting fired from Apple was the best thing that could have ever happened to me. The heaviness of being successful was replaced by the lightness of being a beginner again, less sure about everything. It freed me to enter one of the most creative periods of my life.

During the next five years, I started a company named NeXT, another company named Pixar, and fell in love with an amazing woman who would become my wife. Pixar went on to create the worlds first computer animated feature film, Toy Story, and is now the most successful animation studio in the world. In a remarkable turn of events, Apple bought NeXT, I returned to Apple, and the technology we developed at NeXT is at the heart of Apple's current renaissance. And Laurene and I have a wonderful family together.

I'm pretty sure none of this would have happened if I hadn't been fired from Apple. It was awful tasting medicine, but I guess the patient needed it. Sometimes life hits you in the head with a brick. Don't lose faith. I'm convinced that the only thing that kept me going was that I loved what I did. You've got to find what you love. And that is as true for your work as it is for your lovers. Your work is going to fill a large part of your life, and the only way to be truly satisfied is to do what you believe is great work. And the only way to do great work is to love what you do. If you haven't found it yet, keep looking. Don't settle. As with all matters of the heart, you'll know when you find it. And, like any great relationship, it just gets better and better as the years roll on. So keep looking until you find it. Don't settle.

My third story is about death.

When I was 17, I read a quote that went something like: "If you live each day as if it was your last, someday you'll most certainly be right." It made an impression on me, and since then, for the past 33 years, I have looked in the mirror every morning and asked myself: "If today were the last day of my life, would I want to do what I am about to do today?" And whenever the answer has been "No" for too many days in a row, I know I need to change something.

Remembering that I'll be dead soon is the most important tool I've ever encountered to help me make the big choices in life. Because almost everything — all external expectations, all pride, all fear of embarrassment or failure - these things just fall away in the face of death, leaving only what is truly important. Remembering that you are going to die is the best way I know to avoid the trap of thinking you have something to lose. You are already naked. There is no reason not to follow your heart.

About a year ago I was diagnosed with cancer. I had a scan at 7:30 in the morning, and it clearly showed a tumor on my pancreas. I didn't even know what a pancreas was. The doctors told me this was almost certainly a type of cancer that is incurable, and that I should expect to live no longer than three to six months. My doctor advised me to go home and get my affairs in order, which is doctor's code for prepare to die. It means to try to tell your kids everything you thought you'd have the next 10 years to tell them in just a few months. It means to make sure everything is buttoned up so that it will be as easy as possible for your family. It means to say your goodbyes.

I lived with that diagnosis all day. Later that evening I had a biopsy, where they stuck an endoscope down my throat, through my stomach and into my intestines, put a needle into my pancreas and got a few cells from the tumor. I was sedated, but my wife, who was there, told me that when they viewed the cells under a microscope the doctors started crying because it turned out to be a very rare form of pancreatic cancer that is curable with surgery. I had the surgery and I'm fine now.

This was the closest I've been to facing death, and I hope it's the closest I get for a few more decades. Having lived through it, I can now say this to you with a bit more certainty than when death was a useful but purely intellectual concept:

No one wants to die. Even people who want to go to heaven don't want to die to get there. And yet death is the destination we all share. No one has ever escaped it. And that is as it should be, because Death is very likely the single best invention of Life. It is Life's change agent. It clears out the old to make way for the new. Right now the new is you, but someday not too long from now, you will gradually become the old and be cleared away. Sorry to be so dramatic, but it is quite true.

Your time is limited, so don't waste it living someone else's life. Don't be trapped by dogma — which is living with the results of other people's thinking. Don't let the noise of others' opinions drown out your own inner voice. And most important, have the courage to follow your heart and intuition. They somehow already know what you truly want to become. Everything else is secondary.

When I was young, there was an amazing publication called The Whole Earth Catalog, which was one of the bibles of my generation. It was created by a fellow named Stewart Brand not far from here in Menlo Park, and he brought it to life with his poetic touch. This was in the late 1960's, before personal computers and desktop publishing, so it was all made with typewriters, scissors, and polaroid cameras. It was sort of like Google in paperback form, 35 years before Google came along: it was idealistic, and overflowing with neat tools and great notions.

Stewart and his team put out several issues of The Whole Earth Catalog, and then when it had run its course, they put out a final issue. It was the mid-1970s, and I was your age. On the back cover of their final issue was a photograph of an early morning country road, the kind you might find yourself hitchhiking on if you were so adventurous. Beneath it were the words: "Stay Hungry. Stay Foolish." It was their farewell message as they signed off. Stay Hungry. Stay Foolish. And I have always wished that for myself. And now, as you graduate to begin anew, I wish that for you.

Stay Hungry. Stay Foolish.

Thank you all very much.

.

.

you may see the video on YOUTUBE at : http://www.youtube.com/watch?v=Hd_ptbiPoXM

.

All rights reserved © Stanford University