Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!att!dptg!mtune!rkh
From: rkh@mtune.ATT.COM (Robert Halloran)
Newsgroups: comp.sys.apple2
Subject: Re: How things SIMM to be
Message-ID: <798@mtune.ATT.COM>
Date: 24 Sep 90 13:24:25 GMT
References: <9009231123.AA05692@apple.com>
Organization: AT&T BL Middletown/Lincroft NJ USA
Lines: 22

In article <9009231123.AA05692@apple.com> L77@TAUNOS.BITNET writes:
>Can someone please explain what exactly are SIMMS are(I know it's memory
>chips you put on a memory-card,but what distinguishes them technically and/or
>otherwise from regular 256,1024 etc. memory chips).What's their advantage (or
>disadvantage) over regular memory chips ???

A SIMM (Single Inline Memory Module) is 8 (or 9 for Blue Meanies :-)) RAM
chips on a single-row carrier board.  Major advantage is saving real estate
on the main board, as you can fit four single-row sockets in about the
same space as one row of DIP chips take up.  It's also easier to seat the
things, usually, since it has a card edge rather than umpteen pins to get
bent under the socket.  Disadvantage, obviously, is that if one chip goes out,
you have to replace the whole unit.  Cost works out to about the same per byte.

						Bob Halloran
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