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OrBit
Joined: 28 Feb 2005
Posts: 245
Location: P.R.C
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 Posted: Mon Aug 25, 2008 8:54 am Post subject: A set of C4004-0086R |
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I've got a set of C4004 , They have different package, different producing area,different data code but same "0086R". any comments are appreciated.
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Chiefish
Joined: 23 Sep 2007
Posts: 2153
Location: Northwest N.J. U.S.A
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| Posted: Mon Aug 25, 2008 9:38 am Post subject: |
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Nice chips you have there, funny how the grey zebra is the newest of the three, i always thought the grey and whites were the older style of them.
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wepwawet
Joined: 18 Mar 2004
Posts: 3019
Location: Seligenstadt - Germany
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| Posted: Mon Aug 25, 2008 10:05 am Post subject: |
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a set, he got a SET!
omg, what's going on in china?
pretty nice, I like the one with GroundStrap and "5".
btw, I also have no idea why many chips in different packages have same markings.
There are more chips in different packaging and same marking out there.
A good example are the 8080's that are marked CS.
All eyamples I know are chipped.
So I think all samples that got chipped in the production process were stored separately and when Intel decided to make cheap unicersity kits they took these.
Maybe those 4004's were produced at different times at different places, shipped to Intel and stored somewhere. When they were needed for sale they were printed.
That's the only reason I can imagine.
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doccybrown
Joined: 03 Oct 2005
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Location: Germany
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| Posted: Mon Aug 25, 2008 12:59 pm Post subject: |
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0086R = mask number?
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OrBit
Joined: 28 Feb 2005
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chip68
Joined: 19 Oct 2004
Posts: 1024
Location: Central Pennsylvania
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| Posted: Mon Aug 25, 2008 11:13 pm Post subject: |
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| Chiefish wrote: | | i always thought the grey and whites were the older style of them. |
White and grey-striped on the same board. (1971)
- CMW |
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johnorun
Joined: 04 Apr 2008
Posts: 3364
Location: Chicago, IL- US
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| Posted: Tue Aug 26, 2008 1:21 am Post subject: |
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| chip68 wrote: | | Chiefish wrote: | | i always thought the grey and whites were the older style of them. |
White and grey-striped on the same board. (1971)
- CMW |
I agree. 1976 seems late for a C4004 to still be in production?
...and they are the first C4004's to learn to swim!  |
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smithy
Joined: 27 Apr 2008
Posts: 2906
Location: Sydney, Australia
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| Posted: Tue Aug 26, 2008 2:49 am Post subject: |
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| johnorun wrote: |
...and they are the first C4004's to learn to swim! |
nice one... |
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chip68
Joined: 19 Oct 2004
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Location: Central Pennsylvania
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metalmaker
Joined: 06 Dec 2004
Posts: 161
Location: St. Louis, MO, USA
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| Posted: Wed Aug 27, 2008 7:58 am Post subject: |
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Hmmm....all the lids have the print exactly in the same position on the lid and all have the second zero in C4004 weakly printed...yet all manufactured in a different country?
Did all these come from the same source?
MM
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wepwawet
Joined: 18 Mar 2004
Posts: 3019
Location: Seligenstadt - Germany
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| Posted: Wed Aug 27, 2008 8:47 am Post subject: |
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The bottom print (country) is done first (when the chip is produced).
The print on the lid is/was often done later.
I have many chips with different date codes on top and bottom.
All those chips have the earlier date code on bottom.
That's why I am sure my theory (yes, theory) is correct.
I do not have a proof for it.
When the lid print wad done at eg. the headquarter where all chips got delivered to from several production places it doesn't matter where the plant was. |
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OrBit
Joined: 28 Feb 2005
Posts: 245
Location: P.R.C
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| Posted: Wed Aug 27, 2008 9:56 pm Post subject: |
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| metalmaker wrote: |
Did all these come from the same source?
MM |
Sure, they are same source, but not same time , my friend sell the IC more than 10 years, his credit does not doubt, but I think he don't know the actual value of C4004.
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