What is Chn(Chain) vs AOS(Algebraic Operating System)? TI BA II Plus Tutorial

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The TI BA II Plus calculator has two methods for calculating entries. The first method is the Chain (Chn) method. With the Chn method, the calculator performs operations as it is entered. For example if the following calculation is entered: 6+2x3 (entered from left to right). The calculator will first add 6 and 2, equaling 8. Then the calculator will multiply 8 and 3 equaling 24.

The second method of calculation is the AOS method. With this method the calculator performs the operations based on the algebraic hierarchy. So the calculation 6+2x3 (entered from left to right) first multiplies 2 and 3, equaling 6. Then 6 is added totaling 12.

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