Profile overview
Who is Mario Bellini?
Mario Bellini is an inventor associated with Italy. Their documented work in electronics & computing hardware includes Divisumma 18 electronic printing calculator, the contribution at the center of this evidence-backed profile.
Mario Bellini designed Olivetti’s Divisumma 18 electronic printing calculator, combining compact electronics with a distinctive yellow synthetic-rubber skin and tactile keys. MoMA describes the device as enormously popular and preserves it in the design collection.
What did Mario Bellini invent?
designed Olivetti’s Divisumma 18 electronic printing calculator and its moulded tactile rubber interface
What did Mario Bellini accomplish?
MoMA identifies Divisumma 18 as an enormously popular portable alternative to earlier cabinet-sized calculating machinery.
What is known about Mario Bellini today?
The Steve Jobs Archive published a dated first-person letter from Bellini in its August 2025 Letters to a Young Creator collection.
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