Categories October Surprise 2016 Online Calculator Post author By Mike Nova Post date July 2, 2026 The original calculator was invented in the 17th century by a Frenchman called Blaise Pascal! He was just 18 years old, and wanted to help his father do his tax calculations. ← Ukraine-Russia war latest: Putin unleashes ‘night of horror’ on Kyiv in response to strikes on energy plants → 18 killed as Russia strike hits Ukraine