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From: csimmons@hqpyr1.oracle.UUCP (Charles Simmons)
Newsgroups: comp.sys.misc,comp.os.misc,comp.misc,comp.arch
Subject: Re: The NeXT machine has been announced! (long)
Message-ID: <451@oracle.UUCP>
Date: 16 Oct 88 08:29:41 GMT
References: <360@elan.UUCP> <2070@cloud9.UUCP>
Sender: news@oracle.uucp
Reply-To: csimmons@oracle.UUCP (Charles Simmons)
Organization: Oracle Corporation, Belmont CA
Lines: 31

In article <2070@cloud9.UUCP> cme@cloud9.UUCP (Carl Ellison) writes:
>In article <360@elan.UUCP>, jlo@elan.UUCP (Jeff Lo) writes:
>> The entire CPU board consists of 45 chips as compared to 100+ for a fast
>> PC and 300+ for a typical workstation. Everything has been crammed onto
>> a 12 inch square board through the use of very dense surface mounted
>> devices, and a few large custom CMOS chips. 
>
>By my calculator, 45 chips in 144 square inches
>gives 3.2 sq.in. per chip, on the average.
>
>Since a number of those need to be memory (therefore not monster PGAs),
>I don't see the need to cram.
>
>What's up here?
>--Carl Ellison          ...!harvard!anvil!es!cme    (normal mail address)

Note that the standard 8 Megabytes of memory requires 64 1-Megabit
chips.  (I'm told that there is no parity bit.)  Thus, there are
45 chips in somewhat less than 144 square inches.  Since the board
itself has to fit inside of a 12" cabinent, the board is obviously
somewhat smaller.

-- Chuck






[So, um, anyone know who wrote this 'rn' software and why it won't
let me send a response that's shorter than the original message...]