HP-46 calculator (was Re: Britain is Great (Back from the Island))

From: Eric Smith <eric_at_brouhaha.com>
Date: Mon Sep 13 15:11:10 1999

Tony wrote about HP part numbers:
> Alas ROM and RAMs both had 1818-numbers.

Actually, RAM chips were usually only 1818 if there was some unique
characteristic, such as a hard-wired address decode. General-purpose
RAM chips were usually 1820.

In the calculators, sometimes RAM had make-programmed address decode,
and sometimes it was combined with ROM or other functions.
Received on Mon Sep 13 1999 - 15:11:10 BST