Interesting. I went to Microcenter once and got a tablet for $20 bucks. Nothing fancy though...had Jellybean installed. I will definitely check them out for the pi zero...hope I am not too late to the party.
Pi Zero is $5 but it doesn't have blue tooth, or Wifi and you're probably going to need a dongle to use an HDMI cable and a dongle to convert the micro USB to a usable real USB. The CHIP is pretty much a cheaper Pi Zero.
When I see $5 all I can think about is a massive cluster of these working together with something like Apache Mesos (http://mesos.apache.org/). The Raspberry Pi Zero, due to low cost, low power requirements (Around the 160mA mark (0.5/0.7W!) and small form factor, could be the future of data centres.
You could literally build a 100Ghz machine for $500.
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