Path: utzoo!mnetor!uunet!husc6!yale!decvax!ucbvax!hplabs!hp-pcd!hpcvra!billw
From: billw@hpcvra.HP.COM (Bill Wickes)
Newsgroups: comp.sys.hp
Subject: Re: Speeding up the HP28C
Message-ID: <5040005@hpcvra.HP.COM>
Date: 6 Feb 88 20:30:11 GMT
References: <4374@watdcsu.waterloo.edu>
Organization: Hewlett-Packard Co., Corvallis, OR, USA
Lines: 7

I understand Educalc is offering a $50 trade-in of HP-28C's for 28S's.

Note also that the 28S is completely new electronics compared to the
28C.  The CPU, one display driver, and 64K of ROM are integrated
into a single IC (there are two of these).  The 32K RAM is a commercial
part, not a Saturn RAM.  These points mean a) you can't make
a 28C into a 28S, and b) you can't add RAM to a 28S--it's hard configured.