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In 1959, the IBM 1401 computer was built from boards called SMS cards. A single board might hold just 3 logic gates so the computer needed thousands of boards. Silicon transistors weren't popular yet, so they used germanium transistors. https://www.righto.com/2021/03/germanium-transistors-logic-circuits-in.html …pic.twitter.com/1GsbLgZJtP
I remember peering through the gaps between the front panels of our 1401 and seeing donut memory.
Yeah, just imagine, with the amount of memory that we use now, how big the memory enclosure would have to be if memory was still visible to the eye. :) Not to mention how slow it would be as a result of its size.https://www.youtube.com/watch?v=9eyFDBPk4Yw …
Here are some photos of the IBM 1401's core memory. First photo: it's the block behind the yellow/black wires. Second: the 4000 character module. Third: closeup. Fourth: 12,000 char expansion box, the size of a washing machine and literally twice the price of an SF house.pic.twitter.com/LVyR3pMSVs
Be careful in there, you could easily drop your Samsung 64Gig memory stick and never find it in there.
same here with Elliot 803
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