The all-new TI-84 Evo isn't just an upgrade, TI says, but "an EVOlution." [Photo: Texas Instruments]
Texas Instruments invented the world's first handheld electronic calculator prototype in 1967. This week, it launched a new graphing calculator "built to meet the demands of today's math classroom" and to grow with students from middle school algebra all the way through college and future STEM careers.