So are Apple guaranteeing that they will use the same charging connector/method and audio interface for the next five generations of their phones?
163 posts • joined 12 Sep 2011
Bluetooth radar? At the mandated 2m distance the round-trip delay would be about 7ns.
Better would be to use sonar. Send an ultrasonic 'chirp' through the phone speaker and pick up the reply via the microphone. The round-trip time of ~12ms is rather more manageable, though having the microphone live all the time would not be easy to sell...
Leaving the pilot on the ground gives a few advantages:
- The drone can pull higher 'G' without squishing or disorienting the pilot
- The drone can be more aerodynamic without the need for a human-sized space up front and a window to look out of
- The drone can be expendable. If the opposition carries four air-air missiles just send up five drones.
From the map it seems it would be a simple matter to continue the fibre through the Straits of Gibraltar and make a complete loop. Then if (when?) there is a break, countries downstream of the break can be fed from the other end.
Or they could try continent-sized FDDI...
Many years ago I was taking a short-cut through the data centre and spotted smoke coming from one of the (washing-machine sized) disk drives. Naturally I pushed the Big Red Button. My boss was not entirely happy; he pointed out that the drive wasn't loaded at the time so just powering it down would have been sufficient. Perhaps.
He brought just about everything else. At one time it was reckoned that the best tutorial guide to writing a device driver for NT was the VAX/VMS Device Driver manual.
VAX FORTRAN may have been standard, but the VAX floating-point representation was decidedly strange. There were four different formats and all of them had the exponent in the middle of the word with the mantissa wrapped around it. I believe the aim was some level of compatibility with earlier generations of DEC hardware.
https://nssdc.gsfc.nasa.gov/nssdc/formats/VAXFloatingPoint.htm for the gory details.
Satellites don't all traipse round in neat circular equatorial orbits. Most are inclined to the equator and many have elliptical orbits, some very elliptical indeed. Imagine a three-dimensional motorway with traffic continally swapping lanes; sooner or later someone's going to get side-swiped.
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