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From: bw@hpcvlo.HP.COM (Bill Wilhelmi)
Newsgroups: comp.sys.hp
Subject: Re: HP 28C info sought
Message-ID: <2710003@hpcvlo.HP.COM>
Date: Tue, 20-Jan-87 10:33:28 EST
Article-I.D.: hpcvlo.2710003
Posted: Tue Jan 20 10:33:28 1987
Date-Received: Thu, 22-Jan-87 06:32:21 EST
References: <1494@mhuxt.UUCP>
Organization: Hewlett-Packard Co., Corvallis, OR, USA
Lines: 34

Steve,

The HP 28C was introduced January 5, 1987 at a list price
of $235.  An infrared printer (no cable required!) is also
available for $135. (The printer product number is HP 82240A.)

Here are a few features of the calculator:

* Most real and complex-number math functions work with
  symbolic as well as numeric values.

* An equations solver, similar to the solver on the 18C
  Business Consultant, solves equations for any unknown
  anywhere in the equation.

* It has softkeys and menus available.

* Matrices are stored as single objects so that you can
  multiply two matrices at the press of a single key.

* A user-definable unit conversion system that includes 120 units.
  New units can be defined and assigned to softkeys as if they were
  built in.

* You can plot functions on the display or on the infrared printer.

* You can enter expressions in RPN or algebraic format.  

* Comes with two manuals:  A getting started manual (about 120 pages)
  and a reference manual (about 300 pages).



Bill Wilhelmi