Which major brand merger created the dominant force in advanced graphing calculators that revolutionized mathematics education in the 1990s?

Brand mergers in the mathematics industry have shaped how professionals and students access computational tools. One particular merger revolutionized the availability and sophistication of graphing calculators in educational settings. Test your knowledge of how corporate consolidations have impacted the tools mathematicians and students use every day. Can you identify which famous calculator brand merger created one of the most dominant forces in mathematical computing tools?

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Texas Instruments acquired Casio's calculator division
Hewlett-Packard merged with Sharp's scientific calculator team
Texas Instruments acquired Hewlett-Packard's calculator patents
Casio merged with Canon's computational division