Post ARHPeZFJnBIcFRI4sS by xo@venera.social
(DIR) More posts by xo@venera.social
(DIR) Post #ARGxuoC7BX1mWgkS7k by clive@saturation.social
2023-01-03T17:15:21Z
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A wonderful thread here:@victorgijsbers found this custom-made plate that belonged to his grandfather, and asked Mastodon folks to help figure out ... what do its illustrations mean?Some wonderfully geeky early-computer stuff in the thread: https://mastodon.gamedev.place/@victorgijsbers/109625898894002092
(DIR) Post #ARGyMIO52J5NzFS4Lg by enkiv2@eldritch.cafe
2023-01-03T17:20:17Z
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@clive @victorgijsbers Could the center & bottom be a diagram of hardcoded ROM matrix (or, ex., the opcode decoding for a processor)? I don't understand the inscription though... The top is a date: august 2nd, gotta recalculate the year because i'm getting 980
(DIR) Post #ARGz4BKGeTo4pNawfw by irwin@saturation.social
2023-01-03T17:28:13Z
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@clive @victorgijsbers I love it when people start their posts "I'm not an expert but..." and then proceed to drop some serious science.
(DIR) Post #ARGzHrMjezeCybGtFo by clive@saturation.social
2023-01-03T17:30:45Z
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@irwin @victorgijsbers heh, yeah
(DIR) Post #ARH8bDCpa957nnwQXw by podfeet@chaos.social
2023-01-03T19:15:04Z
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@victorgijsbers @clive asked a Dutch friend:‘Wonder en is gheen wonder’ is Belgian magazine for sceptics. numbers at the top look like binary numbers (8-3-1956). According to Wikipedia Bram was the ‘CTO’ of Electrologica, first Dutch computer factory from 1956-1963. Electrologica was later acquired by Philips. date could be his inauguration date. lines & dots resemble abacus/notations for Boolean tables. https://nl.wikipedia.org/wiki/Bram_Jan_Loopstra, https://en.wikipedia.org/wiki/Electrologica
(DIR) Post #ARH98n4JGbLyaHy1Jo by brianary@mastodon.spotek.io
2023-01-03T19:20:19Z
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@clive @victorgijsbers The grid with circles made me think of this old figure about Magnetic-Core Storage from the 1967 book "Electronic Computers", 2ed (Dover Publications, NY). It precedes ISBNs.
(DIR) Post #ARH9poK8TXhIvgsol6 by darryl_ramm@hachyderm.io
2023-01-03T19:28:54Z
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@clive @victorgijsbers The electrical symbol to the left is a pentode valve. The array of circles in the top center is likely a core memory array, pentodes valves were used to drive those arrays. The green symbol to the right is a magnetic hysteresis curve, key to how core memory operates. So core memory is a big part of what the plate is celebrating, but I don't know the history to understand what exactly or what the other diagrams mean
(DIR) Post #ARH9zLKF93wftATkTg by padzor@mastodon.ie
2023-01-03T19:30:35Z
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@clive @victorgijsbers the icon on the left is a the circuit diagram for a pentode valve, the image on the left is a hysteresis loop. How the rest interact ... not sure.
(DIR) Post #ARHPeZFJnBIcFRI4sS by xo@venera.social
2023-01-03T21:46:15Z
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You know that inscribed disk we put on Voyager as a message to aliens? This is their reply.
(DIR) Post #ARHPeZc0QpRnNnuCEy by clive@saturation.social
2023-01-03T22:25:47Z
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@xo @victorgijsbers lol yes
(DIR) Post #ARIG6RkGT8kii2NeQi by annesjoukje@mastodon.nl
2023-01-04T08:13:53Z
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@clive @victorgijsbers Can't help, but sending you a picture of my father standing by a "computer" in the 1950's in Utrecht University. Thought you might like to see it.
(DIR) Post #ARJVwUtVhNSu0MwVnM by Blanco@c.im
2023-01-04T22:46:05Z
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@clive @victorgijsbers The top is 8-3-1956 in binary code.The bottom means something like "What appears as a miracle is not a miracle" or "Science can explain everything".My friend says that the middle look like from children science books.
(DIR) Post #ARJnjz8HlCsFCK2MLY by clive@saturation.social
2023-01-05T02:04:39Z
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@Blanco @victorgijsbers Yes!