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drswizz
Joined: 10 Mar 2011
Posts: 42
Location: Sweden
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Chiefish
Joined: 23 Sep 2007
Posts: 2153
Location: Northwest N.J. U.S.A
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 Posted: Mon Apr 18, 2011 8:39 pm Post subject: |
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Texas Inst and GTI, motorolla and National semi chips, I dont know what kind of chips yet tho.
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"The only reason for time is so that everything doesn't happen at once." A.E. |
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magictom
Joined: 14 May 2009
Posts: 2281
Location: Hawaii
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| Posted: Mon Apr 18, 2011 9:51 pm Post subject: |
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Beautiful board! Any idea where it came from?
Here we go:
SN54xx black flat packs TI = TTL
S54xx white ceramic flat packs Signetics = TTL
S82xx gold flat packs Signetics = MSI TTL
TNC90xx round gold flat packs TI = unclear to me (custom chips??) |
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drswizz
Joined: 10 Mar 2011
Posts: 42
Location: Sweden
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| Posted: Tue Apr 19, 2011 4:27 am Post subject: |
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| It is from some old Swedish aeroplane. I do not know which specific model though (or if it is from a civilian or military aeroplane). |
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wepwawet
Joined: 18 Mar 2004
Posts: 3019
Location: Seligenstadt - Germany
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| Posted: Thu Apr 21, 2011 2:54 pm Post subject: |
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Hey that's neat!!! Do you have more stuff like that?
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You may use the photos I have posted here under CC BY-NC-SA license. |
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kosmokrator
Joined: 03 Jul 2008
Posts: 4085
Location: Athens-GR
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| Posted: Thu Apr 21, 2011 3:02 pm Post subject: |
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this is eye Candy!!!! yes it looks like Milspec board......But is sooooo Old ...i love the circle Texas Inst Chips.....very nice find.....
Congrats.....Keep it As is not desolder nothing.....
And if u Have More....Share with Us 
btw the ..SN54xx part numbers is Military spec TTL logic chips even today.... |
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drswizz
Joined: 10 Mar 2011
Posts: 42
Location: Sweden
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| Posted: Tue Apr 26, 2011 5:37 pm Post subject: |
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I have no intentions of desoldering anything on that board.
Unfortunately I do not have any other boards that are similar to this one. |
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kosmokrator
Joined: 03 Jul 2008
Posts: 4085
Location: Athens-GR
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| Posted: Wed Apr 27, 2011 2:12 pm Post subject: |
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Btw...this board....have 3 layers of traces??????
i think this is extra-super heavy enge technology for the 1972-73.... or im wrong??? |
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drswizz
Joined: 10 Mar 2011
Posts: 42
Location: Sweden
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| Posted: Thu Apr 28, 2011 6:41 am Post subject: |
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No, actually it has at least six layers.
The board has electronic components mounted on both sides. Three different layers are clearly visible thru the transparent substrate from each side. |
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