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Salman Khan

February 18, 2010

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Robot Engages Novice Computer Scientists

Learning how to program a computer to display the words "Hello World" once may have excited students, but that hoary chestnut of a lesson doesn't cut it in a world of videogames, smartphones and Twitter. One option to take its place and engage a new generation of students in computer programming is a Carnegie Mellon University-developed robot called Finch. A product of CMU's famed Robotics Institute, Finch was designed specifically to make introductory computer science classes an engaging experience once again. A white plastic, two-wheeled robot with bird-like features, Finch can quickly be programmed by a novice to say "Hello, World," or do a little dance, or make its beak glow blue in response to cold temperature or some other stimulus. But the simple look of the tabletop robot is deceptive. Based on four years of educational research sponsored by the National Science Foundation, Finch includes a number of features that could keep students busy for a...

What is Key board?

Key Board:- The most commonly and usually used input device which you see in every house with computer is keyboard and mouse. Keyboard is an electonic input device and is used to enter data into the CPU for processing.It is a typewriter like device.All keyboards have no. ,keys, punctuation keys,and a space bar.They also have functionkeys,numeric ketpad,arrow keys, and certain additional keys kile page-up,page-down, home,end etc. The Qwerty keyboard was designed in 1868 in Milwaukee by Christopher Latham Sholes, who placed the keys corresponding to the most commonly used letter pairs at opposite ends of the keyboard, in order to prevent the typewriter hammers of the time from becoming jammed with one another. This keyboard was first sold by the company Remington in 1873. Therefore, the Qwerty keyboard was designed from a purely technical perspective, hindering usability and efficienc Types of keyboards There are four types of keyboards for PCs. The fi...

History of Computer

Google's first production server, 1999 Many computing advances are hidden from the users they benefit. This server, from around 1999, was one of about 30 made by Google founders Larry Page and Sergey Brin by connecting desktop computer components. The company could ill afford dedicated servers, but Page and Brin showed that using cheap consumer-grade hardware in large amounts could compete with more expensive purpose-built equipment. This approach is still used by the search and advertising giant today, and has influenced many other web firms. The server is on display at the Computer History Museum, Silicon Valley. (Image: James Fry under GNU licence)

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