Which of these famous calculating products was first marketed with the slogan 'Better than tables' and revolutionized engineering calculations in the early 20th century?

Throughout history, certain mathematical tools and products have revolutionized how calculations are performed, equations are solved, and mathematical concepts are taught. These innovations have shaped mathematics education and professional practice alike. Test your knowledge about these famous mathematical products that changed how we approach numbers and equations!

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The slide rule (invented by William Oughtred in 1622, but commercially popularized in the 1900s)
The Curta calculator (a mechanical pocket calculator developed by Curt Herzstark in the 1940s)
The abacus (ancient calculating tool commercialized in the West in the 19th century)
The Brunsviga calculating machine (mechanical calculator manufactured from 1892)