Friday, June 8, 2012

C program for shutting Windows ;) 



void main (void){
    system("shutdown -s");
}


So simple isnt it ?? Try it on others (of course ) ??

Thursday, June 23, 2011

How Digital Jewelry Will Work

    Jewelry is worn for many reasons -- for aesthetics, to impress others, or as a symbol of affiliation or commitment.
    Today, manufacturers can place millions of transistors on a microchip, which can be used to make small devices that store tons of digital data. Researchers have already created an array of digital-jewelry prototypes. "We've made one of almost everything except tongue rings," says Dan Russell, senior manager of IBM's Almaden Research Lab, where IBM is developing digital-jewelry technology.

Wonderful example (Digital Jewellary Cell phone)

 Instead of one single device, cell phones will be broken up into their basic components and packaged as various pieces of digital jewelry. Each piece of jewelry will contain a fraction of the components found in a conventional mobile phone, according to IBM. Together, the digital-jewelry cell phone should work just like a conventional cell phone.

Let's look at the various components that are inside a cell phone
  • Microphone
  • Receiver
  • Touchpad
  • Display
  • Circuit board
  • Antenna
  • Battery
IBM has developed a prototype of a cell phone that consists of several pieces of digital jewelry that will work together wirelessly, possibly with Bluetooth wireless technology, to perform the functions of the above components.

 
 
Here are the pieces of IBM's computerized-jewelry phone and their functions:
  • Earrings - Speakers embedded into these earrings will be the phone's receiver.
  • Necklace - Users will talk into the necklace's embedded microphone.
  • Ring - Perhaps the most interesting piece of the phone, this "magic decoder ring" is equipped with light-emitting diodes (LEDs) that flash to indicate an incoming call. It can also be programmed to flash different colors to identify a particular caller or indicate the importance of a call.
  • Bracelet - Equipped with a video graphics array (VGA) display, this wrist display could also be used as a caller identifier that flashes the name and phone number of the caller.
With a jewelry phone, the keypad and dialing function could be integrated into the bracelet, or else dumped altogether -- it's likely that voice-recognition software will be used to make calls .
IBM is also working on a miniature rechargeable battery to power these components.



  •  Imagine that the same ring that flashes for phone calls could also inform you that e-mail is piling up in your inbox.
  •  IBM is also working to shrink the computer mouse to the size of a ring and create a wrist-worn display.
  •  In the coming age of ubiquitous computing, displays will no longer be tied to desktops or wall screens. Instead, you'll wear the display like a pair of sunglasses or a bracelet.
 Charmed Technology is already marketing its digital jewelry, including a futuristic-looking eyepiece display. The eyepiece is the display component of the company's Charmed Communicator, a wearable, wireless, broadband-Internet device that can be controlled by voice, pen or handheld keypad.


The Java Ring

The Java Ring is a stainless-steel ring, 16-millimeters (0.6 inches) in diameter, that houses a 1-million-transistor processor, called an iButton. The ring has 134 KB of RAM, 32 KB of ROM, a real-time clock and a Java virtual machine, which is a piece of software that recognizes the Java language and translates it for the user's computer system.
 
At Celebration School, the rings have been programmed to store electronic cash to pay for lunches, automatically unlock doors, take attendance, store a student's medical information and allow students to check out books. All of this information is stored on the ring's iButton. Students simply press the signet of their Java Ring against the Blue Dot receptor, and the system connected to the receptor performs the function that the applet instructs it to. In the future, the Java Ring may start your car.
 

Wednesday, June 22, 2011

Best Website for GRE study material

How Bluetooth Works ?

Bluetooth, WiFi and WiMAX are wireless technologies which allow devices to inter-connect and communicate with each other. These technologies are radio frequencies. Similar to the analogue radio, or FM radio. Bluetooth works on 2.45GHz frequency. WiFi works in two frequency bands 2.4GHz and 5GHz. WiMAX works in two frequency bands, 2 - 11GHz and 10 - 66GHz.

BLUETOOTH

It is designed for short range communications with a range of about 10m. As a result, it consumes less power and are suited for very small battery powered devices and portable devices.  
  1. Bluetooth Card


  1. One of the ways Bluetooth devices avoid interfering with other systems is by sending out very weak signals of about 1 milliwatt. By comparison, the most powerful cell phones can transmit a signal of 3 watts. The low power limits the range of a Bluetooth device to about 10 meters (32 feet), cutting the chances of interference between your computer system and your portable telephone or television.
  2. Bluetooth can connect up to eight devices simultaneously
  3. Bluetooth uses a technique called spread-spectrum frequency hopping that makes it rare for more than one device to be transmitting on the same frequency at the same time. In this technique, a device will use 79 individual, randomly chosen frequencies within a designated range, changing from one to another on a regular basis. In the case of Bluetooth, the transmitters change frequencies 1,600 times every second, meaning that more devices can make full use of a limited slice of the radio spectrum. Since every Bluetooth transmitter uses spread-spectrum transmitting automatically, it’s unlikely that two transmitters will be on the same frequency at the same time. This same technique minimizes the risk that portable phones or baby monitors will disrupt Bluetooth devices, since any interference on a particular frequency will last only a tiny fraction of a second.



How BitTorrent Works

BitTorrent is a protocol that enables fast downloading of large files using minimum Internet bandwidth. It costs nothing to use and includes no spyware or pop-up advertising.

What BitTorrent Does

Unlike some other peer-to-peer downloading methods, BitTorrent is a protocol that offloads some of the file tracking work to a central server (called a tracker). Another difference is that it uses a principal called tit-for-tat. This means that in order to receive files, you have to give them. This solves the problem of leeching -- one of developer Bram Cohen's primary goals. With BitTorrent, the more files you share with others, the faster your downloads are. Finally, to make better use of available Internet bandwidth (the pipeline for data transmission), BitTorrent downloads different pieces of the file you want simultaneously from multiple computers.
Here's how it works:
BitTorrent's peer-to-peer download process

BitTorrent's peer-to-peer download process


  • You open a Web page and click on a link for the file you want.
  • BitTorrent client software communicates with a tracker to find other computers running BitTorrent that have the complete file (seed computers) and those with a portion of the file (peers that are usually in the process of downloading the file).
  • The tracker identifies the swarm, which is the connected computers that have all of or a portion of the file and are in the process of sending or receiving it.
  • The tracker helps the client software trade pieces of the file you want with other computers in the swarm. Your computer receives multiple pieces of the file simultaneously.
  • If you continue to run the BitTorrent client software after your download is complete, others can receive .torrent files from your computer; your future download rates improve because you are ranked higher in the "tit-for-tat" system.
Downloading pieces of the file at the same time helps solve a common problem with other peer-to-peer download methods: Peers upload at a much slower rate than they download. By downloading multiple pieces at the same time, the overall speed is greatly improved. The more computers involved in the swarm, the faster the file transfer occurs because there are more sources of each piece of the file. For this reason, BitTorrent is especially useful for large, popular files.
Is it legal?
BitTorrent is perfectly legal to use. However, it is illegal to download copyrighted materials in most countries. So if the file you're downloading is copyrighted, then what you're doing is not legal. See the "Legal Ramifications" section to learn more.

Tuesday, December 14, 2010

Sheila Ki Jawani, a C-grade film

Guess what ?? Sheila ki jawani is back ....But only this time , u cant resist to ignore it ..A man sees the song becoming a hit , decides to make a film ... 12 days later ..:) He finishes the making of the movie at a whopping 25 lakh  lol...Then decides to release on par with "tees maar khan " ....
Now That one heck of a crazy guy :)