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HP 49G

The HP 49G was a graphing calculator by Hewlett-Packard. It had algebraic (default) and RPN entry modes. There was also a computer algebra system (CAS). It was based on a 4 MHz Saturn processor.

The HP 49G+, the successor to the 49G, is also a graphing calculator. HP increased processor speed and added SD card support. The processor is a 75 MHz ARM9 running a Saturn emulator in order to run the operating system (which was not changed much from the 49G).