Computers don't count anything. They index which is massively different to counting. Numbers are also just labels. You're whole premise is based on a question with faulty logic due to misunderstanding the mathematics.The Romans never even had a zero, this is a relatively modern symbol. The ancient mathematicians in greece as well as the chinese and japanese and their abacus had no use for the symbol zero as that is simply what it is, a symbol to help us understand counting and labelling systems.