Which retail technology, first patented in 1906, revolutionized checkout efficiency by automatically calculating transaction prices?

The evolution of retail technology has dramatically changed how we shop. Before computerized systems and self-checkout kiosks, a revolutionary invention in the early 20th century fundamentally transformed the checkout process and retail efficiency. This innovation set the foundation for modern retail operations and significantly impacted how stores track inventory and process transactions. Test your knowledge about this pivotal moment in retail history!

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The cash register with automatic receipt printing
The electronic barcode scanner
The electromechanical cash register with paper tape
The electric cash register with moving totals