- Download PDF
2 Answers | Add Yours
It is the phone evolution obviously
This question is more personal opinion than anything-I would suggest that you ask this question on a discussion board.
My personal opinion is that the microchip is top of the list. It is essential in computers, radios, and all sorts of other devices. It obsoleted vacuum tubes in computers (making possible the desktop computer, radios, GPS devices, and the cell phone). I'm not sure who invented it.
We’ve answered 327,523 questions. We can answer yours, too.Ask a question