The HP 9825A (AKA the 9800 series model 25) was a powerful fully algebraic desktop calculator. It replaced the HP 9820A and made a number of improvements including a full QWERTY …

The HP 9825 had a 16-bit, HP-designed, HP-fabricated microprocessor when the “real” semiconductor industry was producing 8-bit toy microprocessors and years before the major …

In February of 1980, HP changed the keyboard to have standard raised keys and look more "typewriter-like". The 9825B replaced the 9825A in 1980. It came standard with 23K RAM and …

2021年12月18日 · The Hewlett Packard 9825A was HP's high-technology replacement for the earlier 9820A. The 9825 carried on and improved on many of the features and ideas that were …

HP 9825A/B, introduced in 1976, [9] and retired in 1983, featured HPL, a single-line alphanumeric display, and optional thermal printer, HP 9831, an HP9825 with BASIC instead of HPL, HP …

Despite its unassuming calculator looks, the HP 9825 is a powerful 16 bit, all-in-one desktop scientific computer and instrument controller. Well, powerful for the time, which was 1976. It is …

Through its novel architecture and speed, the 9825A runs programs, accepts keyboard operations, and controls instruments--with apparent simultaneity. This virtual "multiprocessing" …

HP 9825A（又名 9800 系列型号 25）是一款功能强大的全代数桌面计算器。 它取代了 HP 9820A 并进行了许多改进，包括一个完整的 QWERTY 键盘（加上特殊功能键）、一个 32（而不是 …

2024年11月22日 · I am referring to my HP 9825A desktop computer. I restored the keyboard about five years ago and Larry Atherton (see post in general forum about Larry) restored a …

The original plan for the product was simply to bolster the communications abilities of the HP 9825A when used with the HP 98036A serial I/O card. To that end, COM ROM added …