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we couldn't find any laptop vendor supplying 3rd generation i7 powered laptop that runs Windows 7
i'm not sure if i missundestood you, english is not my primary language, but srsly?!?!
took me 60 seconds, first stop.
Many suggested an easy way to pay, so put in the apple store and play store an 5$ app that gives the registration number based in the identity of the buyer.
This has several advantages, easy to pay, ubiquitous, trusty, and if the buyer loses the key, he can always re-download the app you already purchased.
Host yourself the app and dont ask for any info for the download,
"Power: Rechargeable lithium-polymer battery, ~5-10 hours of use
Battery Life: Officially 5 days of classroom use or 2 weeks of homework use
That's really, REALLY crappy! for a 15Mhz, 1287k ram device! i would have espected at least ten times that!
A claimed advantage of optics is that it can reduce power consumption, but an optical communication system will typically use more power over short distances than an electronic one. This is because the shot noise of an optical communication channel is greater than the thermal noise of an electrical channel which, from information theory, means that more signal power is required to achieve the same data capacity. However, over longer distances and at greater data rates, the loss in electrical lines is sufficiently large that optical communications will comparatively use a lower amount of power. As communication data rates rise, this distance becomes longer and so the prospect of using optics in computing systems becomes more practical.
and a more interesting article from 2010.
Today computer components are connected to each other using copper cables or traces on circuit boards. Due to the signal degradation that comes with using metals such as copper to transmit data, these cables have a limited maximum length. This limits the design of computers, forcing processors, memory and other components to be placed just inches from each other. Today's research achievement is another step toward replacing these connections with extremely thin and light optical fibers that can transfer much more data over far longer distances, radically changing the way computers of the future are designed and altering the way the datacenter of tomorrow is architected.