The TI-81 was the first graphing calculator made by Texas Instruments. It was designed in 1990 for use in algebra and precalculus courses.

View and Download Texas Instruments TI-81 manual book online. TI TI-81: User Guide. TI-81 calculator pdf manual download.

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Texas Instruments entered the market of Graphing calculators in 1990 with the TI-81, a market prepared by the Casio fx-7000G, the world's first Graphing calculator.

The TI-81, TI's first graphing calculator, was designed for algebra and precalculus. It has since been replaced by newer models which have faster processors, more memory, and popular features such as linking capability and flash upgradability.

The TI-81 was introduced in 1990. The handheld electronic calculator has a blue plastic case with a sliding cover that can also serve as a stand. It has an array of forty-one rectangular plastic keys, many of which can take on three meanings.

Aug 27, 2021 · Texas Instruments TI-81 Manual Online. Download or read online manual, installation instructions, specifications, pictures and questions and answers

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Sep 27, 2017 · Make your mathematical problems easier with this product, or help someone else get an advantage on homework by gifting them this calculator. The perfect complement to a full computer, the TI-81 has all of the information you'll need for a quick start to any math class.