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Comment Re:HP 28S (Score 1) 776

If I have to do any calculations while near the PC, depending on the complexity I use the small packet calculator, a slide rule, the pen&paper method,a Canon scientific calculator (F-720i) or sometimes a scheme (LISP dialect) interpreter.

Only in case of emergency I use GCalc or OO.org Spreadsheets.

Comment Re:Power Source? (Score 2, Informative) 65

IANANE (I Am Not A NASA Engineer) but, IMHO, it will be powered by using the tether as a power cord, using stationary rover's solar cells, who stays on the edge of the crater (not sure about mountains...), as in the image:
http://www-robotics.jpl.nasa.gov/systems/systemImage.cfm?System=16&Image=414

Or maybe rechargeable batteries and periodical recharging from the main rover ?

Businesses

Amazon Enters Gaming Market 52

eldavojohn writes "Ars brings us news of Amazon's entrance into the casual gaming market after purchasing Reflexive last year. Amazon identifies this sort of gaming as a good start for its demographic of customers and is certainly making competitors in the field nervous. There is a lot of evidence that Amazon is testing the waters to see how these small time games go as a prerequisite to something bigger, although they aren't talking. From Ars, 'For the first week, visitors will even be able to grab three games for free: Jewel Quest 2, Build a Lot, and The Scruffs. That, along with the ability to try every game before you buy, should be enough to entice fans of casual gaming to check out Amazon's offerings. It also looks like this could be Amazon's first step into the world of digital distribution for video games.' Do you think this trial will go well for Amazon?"

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