I heard somewhere that before he died, Steve Jobs transferred his consciousness to a computer. He was extremely smart, so there's a small possibility, but I don't think it could be done with today's technology unless made the god of all iPhones. But what if... Steve Jobs became Siri?
This is like the movie Transcendence; it is still impossible to do because every neuron has to be accounted for and our understanding of the brain is still primitive.
He was smart but not as smart as he is portrayed to be, and to answer your question, no. Thays impossible to do. There is a movie about that starring Johnny Depp in it, it's alright movie, called trancendence