It's not a binary choice. Independent boffin builds a ternary CPU on an FPGA

The 5500FP is a ternary CPU implemented on an FPGA. It's not very fast, but it makes it easier to experiment with computers ...
Hackaday

Ternary RISC Processor Achieves Non-Binary Computing Via FPGA

You would be very hard pressed to find any sort of CPU or microcontroller in a commercial product that uses anything but ...
Popular Mechanics

DNA Computer Can Calculate the Square Root of 900

A new DNA computer calculates square roots of perfect squares up to 900. Like quantum computers, DNA computers are an exciting frontier of post-silicon computing. Where previous examples were up to 4 ...
NBC News

It all adds up: Remote islanders invented binary number system

The natives of a remote Polynesian Island invented a binary number system, similar to the one used by computers to calculate, centuries before Western mathematicians did, new research suggests. The ...