my practise

#include <iostream>
using namespace std;
int main()
{
int n1, n2, sum;
cout << "welcome to my arithmetic program!";
cout << "enter 2 integer: ";
cin >> n1 >> n2;
sum = n1+n2;
cout << "sum is" << sum << std::endl;
}




next program

int main()

{
   int number1; // first integer to compare
   int number2; // second integer to compare

   cout << "Enter two integers to compare: "; // prompt user for data
   cin >> number1 >> number2; // read two integers from user

   cin.ignore();

   if ( number1 == number2 )
      cout << number1 << " == " << number2 << endl;

   if ( number1 != number2 )
      cout << number1 << " != " << number2 << endl;

   if ( number1 < number2 )
      cout << number1 << " < " << number2 << endl;

   if ( number1 > number2 )
      cout << number1 << " > " << number2 << endl;

   if ( number1 <= number2 )
      cout << number1 << " <= " << number2 << endl;

   if ( number1 >= number2 )
      cout << number1 << " >= " << number2 << endl;

   cin.get();

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Intel claims optical computing "milestone"

• 
  News

Intel's hybrid silicon laser research has allowed it to transfer 50Gb/s down a single fibre-optic channel.

Intel has made a breakthrough in optical connection technology with the world's first end-to-end silicon photonics connection, which the company claims "could revolutionise computer design, dramatically increase performance, [and] save energy."
The milestone - which is part of the company's investigation into the use of optical, rather than electrical, data carriers within computers - is an important one: Intel claims that its latest prototype device is capable of shifting data at a quite incredible 50Gb/s - "the equivalent of an entire HD movie being transmitted every second."
While high-speed optical data transfer isn't new, Intel's work ditches the commonly used 'exotic' materials often used in laser diodes in favour of the cheap silicon it is so used to working with - reducing the environmental impact of the technology while, the company claims, dropping the cost and size low enough for use inside a computer, rather than for external network connections.
Described by Intel as a "concept vehicle" rather than a ready-to-roll product, the system achieves its impressive speeds by combining four silicon-based lasers each carrying a 12.5Gb/s data stream along a single optical fibre, at the end of which the beam is split once again and sent to four photodetectors for decoding for a total of 50Gb/s along a single fibre.
Intel's Justin Rattner, chief technology officer and director of Intel Labs, claims that "this achievement of the world’s first 50Gb/s silicon photonics link with integrated hybrid silicon lasers marks a significant achievement in our long term vision of 'siliconising' photonics and bringing high bandwidth, low cost optical communications in and around future PCs, servers, and consumer devices."
Although clearly part of the same overall strategy as Intel's already-announced Light Peak technology, the company claims that this work is separate - and given that it has already bested Light Peak by a factor of five, the future is looking bright for optical computing.

syed arslan rizvi copy right through--http://www.bit-tech.net/news/bits/2010/07/28/intel-claims-optical-computing-milestone/1

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In this article I’m going to guide you how to break windows 7 and windows 8 administrator password. You can also use this technique to break the password of windows 7 and windows 8 user account password.

What Are Windows 7 And Windows 8 ?

Windows 7 and windows 8 are the latest operating systems by Microsoft.To provide more user friendly environment between computer user and computer .  These windows are very fast and provide good recovery option in case of windows fail. They also have self healing option. Almost every client end of computers has these windows. By the update option you can easily update the operating system .Windows 7 and 8 provide better graphic support in Pc gaming and have best options for file handling, managing data of drives and etc .

What are The Minimum Requirement For Installing Windows 7 and 8 ?

Windows 7 Processor: 1 gigahertz (GHz) or faster 32-bit (x86) or 64 bit (x64) processor RAM: 1 gigabyte (GB) RAM (32-bit) or 2 GB RAM (64-bit) Hard disk space: 16 GB available hard disk space (32-bit) or 20 GB (64-bit) Graphics card: Direct X 9 graphics device with WDDM 1.0 or higher driver

Windows 8 Processor: 1 gigahertz (GHz) or faster with support for PAE, NX, and SSE2 RAM: 1 gigabyte (GB) (32-bit) or 2 GB (64-bit) Hard disk space: 16 GB (32-bit) or 20 GB (64-bit) Graphics card: Microsoft Direct X 9 graphics device with WDDM driver

How To Break The Administrator Password Of Windows 7 And Windows 8?

There are many software’s for breaking the administrator password. But in this article I will show you the best software’s for breaking the administrator password.

There are some simple steps though which you can easily break the windows

Administrator Password.

1 . First download the software (lazesoft recovery suite) . it is easily available on torrents.

2. Burn the CD/DVD of software (lazesoft recovery suite). you can use POWERISO for CD/DVD burning process.

3. Now insert the CD/DVD in CD/DVD ROM and restart your computer.

4. while Restarting rapidly Press F2 or delete button to access the BIOS set-up (In my case I’m using dell so I press F2 button to access the bios set-up.  But some computer have different buttons to access the bios set-up depends on model.

ACER

Press delete or F2 key.

COMPAQ

Press F1, F2, F10 or delete key .

DELL

Press the F2 key.

GATEWAY

Press the F1 key.

HEWLETT-PACKARD

Press the F1 key.

IBM

Press the F1 key.

PACKARD BELL

Press the F1 , F2 or delete key.

SONY

Press the F1, F2 or F3 key.

TOSHIBA

Press the F1 or ESC key.

5. Now GOTO your boot settings , select the option (boot priority) and then set the option boot from CD ROM at first boot device (this means your computer will boot from CD ROM first when your restart your computer then from HDD According to the sequence you have set .) and press f10 and save the setting .

6. when your computer will restart and boot from CD ROM . you will see the option Lazesoft Live CD [EMS ENABLED].

Hit the enter button it will take 2 to 3 Min to load depends on your hardware. When the software completes its loading and shows the screen which have these options

1. Windows Recovery.
2. Data Recovery.
3. Disk image & clone.
4. Password Recovery.

Select (click) the option (Password Recovery)

7. On next screen select the option (Reset Windows Password) then press NEXT option from bottom.

8. On next screen simply press Next from the bottom.

9.  Now on next screen it will show your computer administrator and user accounts. Select the Administrator and click on next.

10. Now at the last screen click on the optionRESET/UNLOCK it will show you the message

(Reset password successful) click ok .

11. Click on finish and reboot the computer.

12. Remove the LAZESOFT CD from CD/ROM .

13. Again open your bios set-up GOTO =>boot option => set the HDD first at boot priority.(now your computer will boot from HDD(hard disk ) when you restart your computer). And press f10 to save the settings.

After the restart at windows welcome screen you will see the password of administrator account has been removed.

So friends this is very easy way to remove the windows administrator password. You can also use this method to break the user account password.

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3D printing

For methods of applying a 2D image on a 3D surface, see pad printing. For methods of printing 2D parallax stereograms that seem 3D to the eye, see lenticular printing and holography.

An ORDbot Quantum 3D printer.

 

Timelapse video of a hyperboloid object (designed by George W. Hart) made of PLAusing a RepRap "Prusa Mendel" 3D printer for molten polymer deposition.

v t e

3D printing or Additive manufacturing^[1] is a process of making a three-dimensional solid object of virtually any shape from adigital model. 3D printing is achieved using an additive process, where successive layers of material are laid down in different shapes.^[2]3D printing is also considered distinct from traditional machiningtechniques, which mostly rely on the removal of material by methods such as cutting or drilling (subtractiveprocesses).

A 3D printer is a limited type of industrial robot that is capable of carrying out an additive process undercomputer control.

While 3D printing technology has been around since the 1980s, it was not until the early 2010s that the printers became widely available commercially.^[3] The first working 3D printer was created in 1984 by Chuck Hullof 3D Systems Corp.^[4] Since the start of the 21st century there has been a large growth in the sales of these machines, and their price has dropped substantially.^[5] According to Wohlers Associates, a consultancy, the market for 3D printers and services was worth $2.2 billion worldwide in 2012, up 29% from 2011.^[6]

The 3D printing technology is used for both prototyping and distributed manufacturing with applications in architecture, construction (AEC),industrial design, automotive, aerospace, military, engineering, civil engineering, dental and medical industries, biotech (human tissue replacement), fashion, footwear, jewelry, eyewear, education, geographic information systems, food, and many other fields. One study has found^[7] that open source 3D printing could become a mass market item because domestic 3D printers can offset their capital costs by enabling consumers to avoid costs associated with purchasing common household objects.

3D Printers Will Soon Change The World, If It's Not Strangled In A Lawyered Up World

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Image of HCC MakerBot Cupcake CNC printing of spikey gear and raft in the MakerBot 3D printer. (Photo credit: Wikipedia)

By Gary Shapiro

One product which will soon change the world is 3D printing. These devices let consumers print three-dimensional objects at home, from phone cases, jewelry, ceramics and home décor to board game pieces, tools, and even food. The 2014 InternationalCES® was the first ever to host a 3D printing TechZone, and it had to be expanded three times to accommodate all the new companies in the market. As 3D printers evolve with new inputs, features and lower prices, they’ll change the consumer landscape much like MP3 players transformed the music industry at the turn of this century.

Will The CES 2014 Help 3D Printers Cross the Tipping Point?Panos MourdoukoutasContributor

The Future Of 3D Printing And ManufacturingRakesh SharmaContributor

Makerbot And The China ConnectionRakesh SharmaContributor

Cirque Du Soleil Takes A 3D Printed TurnRakesh SharmaContributor

Yet along with this innovation, 3D printing is facing legal challenges. Established players in manufacturing are going after user-generated 3D file sharing sites, arguing that their intellectual property is ripped off by home printers. But in many cases, home 3D printer aficionados are building out and improving upon original designs. Our copyright laws are unclear about the degree to which 3D designs and software are protectable, and what constitutes infringement. Looking ahead, it is important for the courts and the Congress to allow in-home manufacturing to blossom and make its full potential contribution to our economy. Imagine a world where most products are made locally, and aspiring jewelers, cooks, inventors and designers can create, experiment and create new markets with a simple investment from their home.

The U.S. Constitution states that our patent and copyright law should “promote the Progress of Science and useful Arts.” Two centuries later, the debate about what to promote and what to protect through copyright law continues. Recently, the House Judiciary Committee began an overdue examination into whether the copyright laws need updating as it considered the legality of uploading copyrighted files to peer-to-peer networks. But politicians are overrun by armies of lobbyists and their PACs, all trying to strengthen rather than loosen the copyright monopoly Congress bestows. Thankfully, technology moves quicker than Congress and such innovations as the VCR and personal video recorder survived misguided legislative murder attempts.

Our challenge now is to make sure the 3D printing ecosystem does not die death from a thousand cuts.

Thingiverse, a website that allows people to post and share designs for 3D printers, has been fielding Digital Millennium Copyright Act takedown notices since at least 2011. Last year, the company that owns the rights to the Tintin comics issued a takedown notice to Thingiverse over a toy design uploaded by one of the site’s users. The original design – for a simple model based on a rocket from the comic – was removed, but another popped up in its place.

The Tintin rocket is a great, small-scale example of the potential for collaboration and innovation in 3D printing. Though the original design was removed from Thingiverse, another user posted a similar design for a Christmas tree ornament based on the rocket. And someone else modified the idea so it could be illuminated, and then redesigned it again so other users could personalize the ornament with their names or other text. Out of just one idea, at least three new products were created, each improving on the last and providing a product that wouldn’t have otherwise been available. Innovation in 3D printing isn’t just about replicating things. It’s about taking an idea and modifying it to make something even better.

The same example illustrates just how inadequate our copyright system can be at protecting intellectual property, while fostering an environment that allows innovation to thrive in the wake of new technologies. Rights holders need to move away from suing or threatening to sue every potential copyright violator, and embrace a system that makes it easy and affordable for at-home 3D printers to access legal and licensed designs. iTunes’ licensing model is a good example. Just as the recording industry has adapted to digital music downloads and found revenue in other areas like touring and merchandise, the creative content and manufacturing industries will have to adapt to 3D printing. And we’ll all be better off for it, with more access to unique, innovative products and services.

It took more than 20 years from the Copyright Act of 1976 to the establishment of “safe harbors” with the passage of the Digital Millennium Copyright Act (DMCA) of 1998. Yet the Internet now puts the world within our reach in ways no one imagined 40 years ago, that were just glimmers of possibility at the turn of this century when DMCA was passed. We can’t let another 20 years go by before we enact appropriate policies that work in today’s constantly changing Internet era.

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