Vintage-45 is a complete simulation of Hewlett-Packard's scientific hand-held calculator HP-45 f
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Smart Sudoku
Are you familiar with terms like "X-Wing", "2-String Kite", or "Locked Candidates"? If yes, Smart Su
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RPN-38 CX is the first photo-realistic simulation of Hewlett-Packard's popular high-end programm
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RPN-70 HD is a complete, photo-realistic simulation of the financial hand-held calculator HP-70 from
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RPN-70 SD is a complete simulation of the financial hand-held calculator HP-70 from 1974. It handles
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RPN-32 CE is the first photo-realistic simulation of Hewlett-Packard's popular mid-range scienti
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RPN-34 CE is the first photo-realistic simulation of Hewlett-Packard's popular mid-range scienti
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On January 4, 1972, Hewlett-Packard announced the HP-35, world's first scientific calculator sma
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RPN-45 HD is a complete simulation of the scientific hand-held calculator HP-45 from 1973. Processin
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RPN-45 SD is a complete simulation of the scientific hand-held calculator HP-45 from 1973. Powerful
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