26 Aug
2010
26 Aug
'10
1:29 p.m.
On 2010 Aug 26, at 2:38 AM, Rik Bos wrote:
>
> I aquired a lot of small DIL14/16 PROMS ceramic package with
> a 8 digit number on it some of the numbers are :
...
> I can't find any reference about them, so if
some one
> recognizes the numbers or can use them let me know (I've a
> few hundreds of them) If no one wants them I'm going to
> archive them in the big metal bin.
Adding to mike's and ethan's cross-refs, I have a large core memory
module from Burroughs from 1979, the IC's have both Burroughs and 7400
part numbers on them. Out of your list I was able to cross-ref 3 of
them, although 2 of those have already been cross-ref'd:
mike ethan brent
2584 0821
2574 6975
2571 5418
2600 1529
1447 3581 7438 7438N 7438J[1]
1447 3540 7410 7410F
2600 1495 7404 74S04F [2]
1447 3797 9322 SN74157
2600 1487 74S00F
2603 2623
2625 5562
2554 0888
2600 1495 (listed twice)
([1] over-stamped with 2624 8922)
(ethan's list shows a different burroughs # for 7404)
--
For my own interest, I wish I knew what machine this core memory came
from. A large plug-in PCB about 18 inches square, with a daughter-board
containing a folded planar array mounted to it. 32 KWords, 20
bits/word.