How/What would make terenary (trinary) computers and above more advantageous? Answered
I was wondering if going above binary computing would be very advantageous. I was listening to a professor's lecture at a summer camp at a university, and he talked about making computers that used light changing colors and lasers instead of only electricity. I figured that something like that would use terenary computing or above. Can you make a computer using non-binary from parallel circuits? If anyone can make a computer using terenary code or above, please post an instructable on it. A light computer would be cool too.
(ONLY ANSWER IF YOU SERIOUSLY KNOW WHAT YOU'RE TALKING ABOUT= COMPUTER/ELECTRONICS EXPERTS)