After that, TI 30 went under many transformations in its design under the brand name of TI. One such calculator was TI 30, designed by Texas Instruments. The first scientific calculator was manufactured in 1968, and then thousands of portable scientific calculators have been invented. Scientific calculators are designed to solve problems in mathematics, science, and engineering. The basic calculators are used to do general-purpose calculations in home and office. Calculators have enhanced our ability to perform basic calculations and also helped us to understand and fulfil these calculations at a bigger scale and speed. Modern electronic calculators are used to carry out many tasks such from basic maths tasks to arithmetic to complex mathematics. How To Put The Calculator In Radian Mode TI-30 Types Of Calculators Hence, before diving into the modes and their functions of a calculator, let’s briefly recapitulate these calculators. Some are simple calculators doing basic calculations, while some are scientific or financial calculators doing complex calculations. There are various types of calculatorsavailable in the market. Every single person in the world would have used a calculator for their day-to-day purpose. Have you used a calculator before? We are pretty sure you would have.