PCs,mobiles,laptops & now solar cars which you think will be the most talk about invension in next five years

Answer 1

the Time Machine

http://www.youtube.com/watch?v=GHC8z6ULs18

nero implanted computer chips for extra memory and individual connectivity (a truely "personal" cell phone)

a working, implantation
http://en.wikipedia.org/wiki/Neuroprosthetics

if you ment out of the 3 you gave, then I'd say.
Mobiles

pcs are old news, mobiles will have just as much power, only the can be implanted like I said.