Topic summary
HP-28S

Extracted from the Wikipedia article HP-28 series.
Further reading
- HP-28S Advanced Scientific Calculator Owner's Manual(PDF) (4 ed.). Hewlett-Packard. November 1988 [November 1987]. HP 00028-90066. Archived(PDF) from the original on 2015-06-08.
- HP-28S Advanced Scientific Calculator Reference Manual(PDF) (4 ed.). Hewlett-Packard. November 1988 [October 1987]. HP 00028-90068. Archived(PDF) from the original on 2015-06-08.
- HP 82240A Infrared Printer(PDF) (2 ed.). Corvallis, OR, USA: Hewlett-Packard, Portable Computer Division. October 1986. HP reorder number 82240-90001 (82240-90008). Archived(PDF) from the original on 2016-08-06.
- HP 82240B Infrared Printer (1 ed.). Corvallis, OR, USA: Hewlett-Packard. August 1989. HP reorder number 82240-90014.
- Courbis, Paul; Lalande, Sébastien (2006-06-27) [1989]. Voyage au centre de la HP28c/s (in French) (2 ed.). Paris, France: Editions de la Règle à Calcul. OCLC 636072913. Archived from the original on 2016-08-06.[1][2][3][4][5][6]
- Wickes, William C. (1988). HP-28 Insights: Principles and Programming of the HP-28C/S. Corvallis, Oregon: Larken Publications. ISBN .
- Wickes, William C. (January–February 1987). "The HP-28C: An Insider's Perspective". HPX Exchange. 1 (1).[7]