HP-35s Scientific Calculator Review

The HP-35s Calculator Looking Backward to Move Forward The HP-35s calculator is a 35th anniversary tribute to the original HP-35 calculator. The HP-35 was the first hand-held scientific calculator, and a revolutionary device in its time. The HP-35s is much more than a simple retro look back at the past triumphs of Hewlett-Packard. It’s a […]

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