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From: jhallen@wpi.wpi.edu (Joseph H Allen)
Newsgroups: comp.arch
Subject: Re: ENIAC Query
Message-ID: <5694@wpi.wpi.edu>
Date: 17 Nov 89 18:08:23 GMT
References: <38193@lll-winken.LLNL.GOV> <Nov.11.23.03.48.1989.3337@porthos.rutgers.edu>
Reply-To: jhallen@wpi.wpi.edu (Joseph H Allen)
Organization: Worcester Polytechnic Institute, Worcester, MA. USA
Lines: 16

In article <Nov.11.23.03.48.1989.3337@porthos.rutgers.edu> webber@porthos.rutgers.edu (Bob Webber) writes:
>In article <38193@lll-winken.LLNL.GOV>, berry@lll-crg.llnl.gov (Berry Kercheval) writes:
>> Anyone know what *kind* of vacuum tubes ENIAC used?  Were they 6SN7's?

>which lists the following breakdown of tube type in the ENIAC:

>    6,550 6SN7 Twin Triode
>    4,200 6L6 Beam Power

>    2,600 6SA7 Pentagrid Converter

What in hell did they use 2600 of these for?  Did they use the multiple grids
as a seperate gate inputs?  (or did they do a lot of messy analog
multiplying...)

How many radios == 1 ENIAC?