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Random Fun Things In My Collection

esot.ericesot.eric wrote 04/27/2015 at 15:18 • 1 min read • Like

Hitachi HD68P01V07:

Just Look at it!

Seriously, it's got a socket for an EEPROM built-in!

HOLY CRUD: It has *dual-procesor* support!

http://pdf1.alldatasheet.com/datasheet-pdf/view/122457/HITACHI/HD68P01V07-1.html

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This paper appears to be for punch-cards. My buddy and I were planning to play a long-distance long-term game of "Battle Ship" with it. I should probably stop using it as graph-paper... It's probably pretty rare these days!

IBM GX20-1818-1 U/MO25

"NOTE: Dimensions on this sheet vary with humidity."
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Discussions

frankstripod wrote 04/28/2015 at 09:50 point

Cool, but the datasheet looks like it was faxed into the internet. How old is that thing?

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esot.eric wrote 04/28/2015 at 10:26 point

Hah! I thought the ceramic and gold were dead-giveaways... also thought "in my collection" was self-explanatory. I don't know *why* I thought these things... So, the basic jist is: I've inheritted *a lot* over the years... over the *decades*... from people who had their collections for *decades*.

I don't see a date on these chips, surprisingly... I have no idea! There's no date in the data-sheets either. So, definitely after the IBM PC became common-place, mid-to-late 80's? 

I need to take some pictures of my own, though... these things are weird... That picture makes the pins look like the drop down from the sides of the chip... but the pin-spacing is actually a normal fat-DIP, just like the socket above... so the pins are actually mounted on the *underside* of the ceramic slab and bent downward. Weird.

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davedarko wrote 04/27/2015 at 15:25 point

I've seen too much EEVblog episodes, because whenever I see something cool a little Dave Jones in my head says "beauty".

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