Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Paul Courbis, born on the 3rd of November 1967, is a French programmer, mostly known for reverse engineering the HP-28 and then the HP-48 series of calculator, and writing multiple articles and books disclosing his findings. These books had a surprising success in France.Very soon, a team of enthusiasts formed, gathering around Maubert Electronique a small electronics shop in the Latin Quarter, and developing a large number of utilities and games (one of the most impressing one was Pacman for the 48, one of the first program using the hardware scrolling device of the 48).

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