Which invention is considered the first true computerized Point of Sale (POS) system that revolutionized retail operations?

Point of Sale (POS) systems revolutionized retail by streamlining transactions and inventory management. One groundbreaking invention in particular marked the transition from mechanical cash registers to computerized systems, fundamentally changing how retailers operate. Test your knowledge about this pivotal moment in retail technology history that shaped today's shopping experience.

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IBM's 3660 Supermarket System (1973)
NCR's Class 5 Electronic Cash Register (1974)
Fujitsu's FITPOS System (1979)
McDonald's MICROS System (1982)