MIT's Nicholas Negroponte wants to provide Internet access to all the world. His plan: a dirt-cheap computer.
In May, at the Wall Street Journal's D3 conference outside San Diego (an event attended by technology princes like Bill Gates and Steve Jobs), I saw the elements of a computer that, if it were built, would wonderfully improve the fortunes of poor children.
Nicholas Negroponte, founder and chairman of MIT's Media Lab, showed attendees the screen of the Hundred-Dollar Laptop, or HDL. Beginning in 2006, he said, he would build 100 million to 200 million HDLs every year -- and distribute them to the children of the poor world. Many attendees had read about Negroponte's idea and dismissed it as quixotic. Hearing how an HDL might be built, seeing a part of it, and realizing the scale of the project produced a rustle of delighted interest.
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This document is part of the “How-To Guide for Most Common Measurements” centralized resource portal. This tutorial provides a detailed guide for measurement and device considerations to take temperature measurements using thermocouples. Get an introduction to thermocouples, which are inexpensive sensing devices widely used with PC-based data acquisition systems. Also review some specific thermocouple examples and learn how thermocouples work and ways to integrate them into a data acquisition measurement system.
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