Texas Instruments TI36XPRO TI-36X Pro Scientific Calculator, 16-Digit LCD Sold as 1 EA. Advanced scientific calculator is ideal for engineers, students and professionals. MultiViewTM display allows you to view multiple calculations at the same time. MathPrintTM feature shows math expressions, symbols and stacked fractions as they appear in textbooks. Input data, scroll through entries and make edits like using a graphing calculator. Toggle key converts fractions and square roots into decimals and back.