See WP:RECENTISM, which says "Recentism is writing or editing without a long-term, historical view ... resulting in ... muddling or diffusion of the timeless facets of a subject, previously recognized by Wikipedia consensus."  Let's don't do that.  When the calculator article was split into mechanical and electronic parts, the titles should have been adjusted to reflect that.  The prior concensus was that both are important facets of calculators.