How to get a free graphing calculator for your PC and Android phone. Specifically the HP-48GX. This will step you through the install process for the PC.\r
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EMU48 PC Software: \r
HP48GX ROM (Revision R): \r
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Additional information about ROMs: \r
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HP 48gx Graphing Calculator User guides\r
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HP 48G Series Advanced Users Reference Manual\r