They use Linux based operating systems. Some say they use highly costumised Ubuntu - Goobuntu.
Yes, you need to have a working Google account to use this tablet.
no
You can use the Ubuntu operating system as you would use any other operating system! Unlike MS Windows, which is propriety and has to be paid for, Ubuntu is a free, open-source operating system that can be downloaded for free, and copied and given away as much as you like! I recommend searching Google for more info.
Google Android is a mobile operating system running on the Linux kernel. It was invented eleven months ago by Google.
The Chinese Mobiles uses a number of operating system. Some of the operating system that the Chinese mobiles use include Symbian, Google Android and Palm OS.
Yes, you can use multiple Google accounts.
the nexus one can use 802.11b and g and it is capable of using n but google have yet to activate it it seems the hardware is there for it
Yes, it is available in the Google Play store.
No. I believe TI83+ and TI84 do use an operating system.
It uses an android operating system.
It uses an android operating system.