Flush and recessed displays of hp 27s calculator.

[Steve Simpkin]

(06-11-2024 03:22 AM)rprosperi Wrote:  I don't recall specific prices I paid for the 27S units I have, but likely in the $60-75 range, though I do recall one of them was probably listed by someone that had no idea what they were doing as I got it for about $30.

The 27S is an excellent machine! If it had RPN, it would be my daily carry machine, but alas... it doesn't.

The Pioneer Solver it has is a truly powerful and flexible tool, learn it and get to know its quirks early on and you will be a much happier user. Of course basic use of the solver is described in the owner's manual, but I suggest that once you know the basics, get the manual "Step-by-Step Solutions: Technical Applications (27S/19B)", which really does a far better job of demonstrating it's power, use and flexibility.

https://literature.hpcalc.org/items/1143

Enjoy your 27S!

The above book, "Step-by-Step Solutions: Technical Applications (27S/19B)", was published by HP in 1988 and helped explain the advanced functionality of the Solver used in the HP-27S/HP-19B. While it was published by HP, it was actually written by Steven J. Sabin. As payment, he requested an HP-27S, HP-28S, and an infrared printer (HP-82240A), all of which he still has. Here are Steve's memories of writing that book.
https://www.hpmuseum.org/forum/thread-15...#pid149679