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-   -   How to repair an ENIAC??? (https://www.diybanter.com/electronics-repair/232073-how-repair-eniac.html)

Carl Dau January 31st 08 05:35 AM

How to repair an ENIAC???
 
I've just bought an ENIAC on the local flea-market but this
computer is really full of "bugs".

How can I fix this monster and do you think it can compete
with my Commodore 64???

JeffM January 31st 08 06:30 AM

I assume eunet.esprit is his scorecard group (was: How to repair anENIAC?)
 
eunet.esprit removed from Groups line.
If you respond to this troll, I suggest you do the same.
http://groups.google.com/group/sci.e...0.newsgrou ps

Carl Dau wrote:
I've just bought an ENIAC on the local flea-market
but this computer is really full of "bugs".
How can I fix this monster
and do you think it can compete with my Commodore 64???


First you invent a re-animator
then you find out where Eckert and Mauchly are buried.

Smitty Two January 31st 08 03:31 PM

How to repair an ENIAC???
 
In article
,
Carl Dau wrote:

I've just bought an ENIAC on the local flea-market but this
computer is really full of "bugs".

How can I fix this monster and do you think it can compete
with my Commodore 64???


Dude, it is time to upgrade. Have you looked into the Amiga line?

CJT February 1st 08 03:33 AM

How to repair an ENIAC???
 
Carl Dau wrote:

I've just bought an ENIAC on the local flea-market but this
computer is really full of "bugs".

How can I fix this monster and do you think it can compete
with my Commodore 64???


sure you did ...

--
The e-mail address in our reply-to line is reversed in an attempt to
minimize spam. Our true address is of the form .

Sam Goldwasser February 1st 08 04:04 AM

How to repair an ENIAC???
 
CJT writes:

Carl Dau wrote:

I've just bought an ENIAC on the local flea-market but this
computer is really full of "bugs".
How can I fix this monster and do you think it can compete
with my Commodore 64???


sure you did ...


I have a tube from the ENIAC. :)

--- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: Anything sent to the email address in the message header above is
ignored unless my full name AND either lasers or electronics is included in the
subject line. Or, you can contact me via the Feedback Form in the FAQs.

Franc Zabkar February 1st 08 04:51 AM

How to repair an ENIAC???
 
On Wed, 30 Jan 2008 21:35:21 -0800 (PST), Carl Dau
put finger to keyboard and composed:

I've just bought an ENIAC on the local flea-market but this
computer is really full of "bugs".

How can I fix this monster ...


Give these guys a call:
http://www.tnmoc.org/ColRbd.htm

... and do you think it can compete with my Commodore 64???


Try the Cipher Challenge:
http://www.tnmoc.org/cipher1.htm

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

n cook February 1st 08 08:47 AM

How to repair an ENIAC???
 
Smitty Two wrote in message
...
In article
,
Carl Dau wrote:

I've just bought an ENIAC on the local flea-market but this
computer is really full of "bugs".

How can I fix this monster and do you think it can compete
with my Commodore 64???


Dude, it is time to upgrade. Have you looked into the Amiga line?



I've got a 56 bit (sorry, not byte) core store if you need a memory upgrade.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/





George Cornelius February 7th 08 11:16 AM

How to repair an ENIAC???
 
In article , Sam Goldwasser writes:
CJT writes:

Carl Dau wrote:

I've just bought an ENIAC on the local flea-market but this
computer is really full of "bugs".
How can I fix this monster and do you think it can compete
with my Commodore 64???


sure you did ...


I have a tube from the ENIAC. :)


A 12AX7?

It's a shame, but I lost a two-tube circuit board I once had from a 50's
computer - a Bendix I think - with two 6146 beam power tubes, part of the
drum memory head driver circuitry. Maybe two in parallel to feed a head?
[shades of Gracie Slick...]

What a concept.

--
George Cornelius cornelius ( A T ) eisner.decus.org

--- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: Anything sent to the email address in the message header above is
ignored unless my full name AND either lasers or electronics is included in the
subject line. Or, you can contact me via the Feedback Form in the FAQs.


boardjunkie February 7th 08 04:22 PM

How to repair an ENIAC???
 
On Feb 7, 6:16*am, (George Cornelius)
wrote:
I have a tube from the ENIAC. :)


A 12AX7?


More likely a 12AV7 or maybe a 12AZ7.

It's a shame, but I lost a two-tube circuit board I once had from a 50's
computer - a Bendix I think - with two 6146 beam power tubes, part of the
drum memory head driver circuitry. *Maybe two in parallel to feed a head?


A "pointed little head"? ;)


[shades of Gracie Slick...]

What a concept.


isw February 8th 08 05:02 AM

How to repair an ENIAC???
 
In article
,
boardjunkie wrote:

On Feb 7, 6:16*am, (George Cornelius)
wrote:
I have a tube from the ENIAC. :)


A 12AX7?


More likely a 12AV7 or maybe a 12AZ7.


None of the above; baseless miniature tubes like those didn't show up
until quite a while after the ENIAC was developed.

Most likely it would be a 6SN7, though other octal-based tubes of
similar vintage were used too.

Isaac

Sam Goldwasser February 8th 08 01:13 PM

How to repair an ENIAC???
 
isw writes:

In article
,
boardjunkie wrote:

On Feb 7, 6:16*am, (George Cornelius)
wrote:
I have a tube from the ENIAC. :)

A 12AX7?


More likely a 12AV7 or maybe a 12AZ7.


None of the above; baseless miniature tubes like those didn't show up
until quite a while after the ENIAC was developed.

Most likely it would be a 6SN7, though other octal-based tubes of
similar vintage were used too.


Probably. It's definitely octal. No idea if it's original though.

--- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: Anything sent to the email address in the message header above is
ignored unless my full name AND either lasers or electronics is included in the
subject line. Or, you can contact me via the Feedback Form in the FAQs.


Michael A. Terrell February 9th 08 02:29 AM

How to repair an ENIAC???
 
isw wrote:

In article
,
boardjunkie wrote:

On Feb 7, 6:16 am, (George Cornelius)
wrote:
I have a tube from the ENIAC. :)

A 12AX7?


More likely a 12AV7 or maybe a 12AZ7.


None of the above; baseless miniature tubes like those didn't show up
until quite a while after the ENIAC was developed.

Most likely it would be a 6SN7, though other octal-based tubes of
similar vintage were used too.

Isaac



It was he industrial version, the 5962.


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida


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