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This rare treasure is a 1960s Univac Core Memory Plane from a Univac III computer. Included is a photo copy of original Fortune Magazine advertisement. It is an intricately handmade board that contains 4096 bits of information or 512K. This core memory plane board came from a “Stack Module”, which had 8 of these boards with supporting electronics for a 4,096K stack or Stack Module. Note – There were actually 5 or more extra of these boards in a Stack Module for parity, + or – sign and extra modules if one or two primary boards failed). These old core memory planes are very rare and highly sought after by museums and professional collectors. A complete Stack Module of core memory of 8 core planes in 1960s cost around $ 15,000.00 each (Univac III and the 9200 Systems started at $ 150,000.00 to half a million dollars & more if you wanted tape drives). This board is in mint condition and measures 4.25” square. These 40+-year-old rare Core Memory treasure will highlight any collection of old computer history.
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