HP-28 series
. but its too expensive for me > > and too much considering i just need the 28S manuals. com/hpdata/hp28c.htmlhttp:// manual (in PDF format) for.
HP-28S Quick Reference General List of. Note that older versions of the Reference Manual describe this. HP-28C/S Quick Reference.
The HP-28C (Paladin) Introduced on the 5th January 1987, discontinued the 4th of January 1988. Getting Started Manual and Reference Manual. HP-28C related links.
HP-28C/S With the HP-28C, Hewlett-Packard completely revamped the scientific calculator. This model did symbolic math, used named variables, understood many data.
HP-28s calculator, and its 2 volume spiral-bound manuals. HP-28S Advanced Scientific Calculator Owner's Manual 1988. amazon HP-28s top view.
Voyage au centre de la HP28c/s (in French) (2 ed.). Paris, France: Editions de la Règle à Calcul. OCLC.
HP-28S Owner's Manual, Nov 1988 (PDF) HP-28S Reference Manual, Nov 1988 (PDF) A number of interesting programs (PDF) HP-28S Software Power Tools (PDF).
1987, Volume, Issue Aug-1987. Max Jones, the author of the Getting Started Manual for the HP-28C, made numer ous contributions to the user interface and the design.
The HP-28C and HP-28S were two graphing calculators produced by Hewlett-Packard from 1986 to 1992. The HP-28C was the first calculator capable of solving equations symbolically. They were replaced by the HP 48 series of calculators, which grew from the menu-driven RPL programming language interface first introduced in these HP-28 series.