Which invention is considered the first true electronic point of sale (POS) system, revolutionizing retail checkout in the early 1970s?

The modern retail landscape was forever changed with the invention of point of sale (POS) systems. These technological innovations transformed how businesses process transactions, track inventory, and analyze consumer behavior. Behind today's sophisticated POS systems lies a fascinating history of discovery and innovation. Test your knowledge about the pivotal moment when retail checkout was revolutionized by technology!

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IBM's 3660 Supermarket System with barcode scanning
NCR's Model 7 cash register with electronic components
Apple's first touchscreen retail interface
McDonald's custom order-tracking computer system