Which calculator company first successfully marketed affordable electronic calculators to students by creating specialized retail displays allowing customers to test different mathematical functions in-store?

The introduction of affordable electronic calculators dramatically changed both mathematics education and retail marketing strategies. These devices transformed from luxury corporate equipment to everyday consumer products through innovative retail approaches and strategic brand positioning. This poll tests your knowledge about a pivotal moment in mathematical product innovation that fundamentally altered how mathematics tools were marketed to consumers.

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Texas Instruments with their 'Learning Center' displays for the TI-30 calculator in 1976
Hewlett-Packard with their 'Calculator Corner' booths for the HP-35 scientific calculator in 1972
Casio with their 'Math Solution Stations' for the fx-7000G graphing calculator in 1985
Sharp with their 'Calculate It Yourself' interactive displays for the EL-8 calculator in 1970