[time-nuts] tube GPS receivers

Lee Mushel herbert3 at centurytel.net
Mon Jun 24 10:32:50 EDT 2013


Boy, are you bringing back memories and you made me look to see that my 
collection of odd old stuff wasn't damaged by the recent flooding we've had. 
I know that I have a "64" bit handwired memory board and I couldn't find 
that but did stir up a Fabri-Tek board that I think was 64 K but that was an 
entirely different generation.   I did get to tour the SAGE system computer 
at Madison's Truax Field in 1958.   They had the loudspeaker on so you could 
hear the computer work.   A monster pile of vaccuum tubes!

Lee   K9WRU
----- Original Message ----- 
From: "Jim Lux" <jimlux at earthlink.net>
To: <time-nuts at febo.com>
Sent: Sunday, June 23, 2013 7:44 PM
Subject: Re: [time-nuts] tube GPS receivers


> On 6/23/13 10:47 AM, Chris Albertson wrote:
>> Magnetic cores were not invented until the 1950's and realy cam into use 
>> as
>> tubes were beibg replaced by SS.  But there isnot reason yu can't build a
>> tube computer with core memory.   I have actually seen and used a 
>> computer
>> that had one megabyte of core memory.  The stuff was still in use in the
>> late 1970s   1MB was a lot of RAM in 1975.
>>
 




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