The HP-25 was a hand-held programmable scientific/engineering calculator made by Hewlett-Packard between early January 1975 and 1978. The HP-25 was introduced as a cheaper …

HP-25. The HP-25 started on the drawing board as a scientific calculator with a much larger set of functions than the HP-21. By the time it was done, it was that and it was programmable with …

HP-21 有 3 个芯片（ACT、Anode Driver + ROM、Cathode Driver），HP-25 有 5 个（一个额外的 ROM 和 RAM 芯片）。 ACT 是系统的核心。 它是一个完整的片上MCU，带有一个定序 …

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2021年10月10日 · hp-25最初是作为一种科学计算器出现在绘图板上的，它的功能比hp-21多得多。 当它完成的时候，它是那样的，并且可以用49行内存编程，使它成为惠普可编程计算器中 …

Free download of a color scan of the English-language book 'HP-25 Owner's Handbook' by Hewlett-Packard, which is an owner's manual (user's guide, operating manual, owner …

hp-25c An improved version of the HP-25 featuring continuous memory. Programs and data were retained when the calculator was turned off, because the new low power CMOS memory was …

The HP-25 was a hand-held programmable scientific/engineering calculator made by Hewlett-Packard between 1975 and 1978. The HP-25 was introduced as a cheaper (US$195 MSRP) …

This handheld electronic calculator, relatively small and simple for a calculator sold by Hewlett-Packard, was introduced on February 1, 1975 and sold through 1978. It was one a series of …

View and Download HP 25 owner's handbook manual online. Programmable Scientific calculator. 25 calculator pdf manual download.