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Assistive Technology: GTCalc Graphing Talking Calculator Software

GTCalc has four levels of magnification and the ability to zoom in and out and turn speech on and off.
GTCalc has the following modes: Calculate, Rational, Finance, Functions, Graph, Set Axes and Set Colour Scheme.

With GT Calc you also have the ability to set the colour scheme to High Contrast White or High Contrast Black, and also set the color of the Desktop, Windows and Text for all screens other than the Graph screen.
GTCalc also comes with an on-screen Help function.