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Programming

Submission + - Time measuring

An anonymous reader writes: We all know computers can measure time in seconds and milliseconds. But how precise can computers be when measuring time? microseconds? nanoseconds? picoseconds? femtoseconds? attoseconds? zeptoseconds? yoctoseconds? How precise can you measure time on a x86 / home PC? How precise can you measure time on a computer? How do scientists measure time when accuracy and precision is very important?
Robotics

Submission + - VIPeR: Israel's Killer Robot

Guy Yernisberg writes: Israeli defense contractor Elbit Systems has just completeted the final model of its new VIPeR autonomous defense robot. It's armed with an Uzi submachine gun and can throw grenades. It has an onboard camera for aiming and identifying possible targets. The problem is, once armed, it shoots at everything it can see. It's supposedly intended for use against Palestinian and Lebanese guerilla fighters — but they live amongst the civilians and not in "combat zones" as the IDF claims. Releasing a killing machine in the middle of a city might not be such a good idea after all.
Hardware Hacking

Submission + - Balancing One-Wheeled Scooter

Keyboard Hacking Guy writes: "Via HackaDay: Want to make a cheap Segway yourself? Here is a selfmade one-wheeled balancing scooter / skateboard. Using it is very similar to a snowboard to ride, requiring no user input other than the movement of your body mass. Leaning forwards and backwards controls the velocity and moving your weight from heal to toe controls the turn radius. It's easy and very intuitive to ride. See video on YouTube."
Communications

What are the Best Cell Phone Services in the US? 239

James Hewfanger asks: "Cnet.co.uk has run an article on the five best cell phone services in the UK. These include a text-based service that gets you the number of a licensed cab company in London, Google Maps and Gmail on your phone, a service that can tell what artist and song you're listening to, an online service that backs up all your cell phone contacts and a text-based service that answers any question you can throw at it. What, however, are the five best cell phone services in the US?"

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