Newsgroups: comp.lang.c
Path: utzoo!henry
From: henry@utzoo.uucp (Henry Spencer)
Subject: Re: non-binary hardware
Message-ID: <1988Sep12.032804.25762@utzoo.uucp>
Organization: U of Toronto Zoology
References: <1285@mcgill-vision.UUCP> <3473@phri.UUCP>
Date: Mon, 12 Sep 88 03:28:04 GMT

In article <3473@phri.UUCP> roy@phri.UUCP (Roy Smith) writes:
>	I vaugely remember reading about a new RAM technology in which each
>memory cell stored one of 4 different voltage levels.  This was converted
>on-chip to two convention binary bits.  Unfortunately, I can't remember
>anything about it...

4-state *ROMs*, not *RAMs*, are already in use to a modest extent.  It's
one more way of getting somewhat higher memory density, and apparently it
does work all right.  Nothing but the on-chip circuitry ever sees it.
-- 
NASA is into artificial        |     Henry Spencer at U of Toronto Zoology
stupidity.  - Jerry Pournelle  | uunet!attcan!utzoo!henry henry@zoo.toronto.edu