Robert Dennard’s DRAM vs Magnetic Core Memory — How a Tiny Cell Replaced an Entire Memory Era

Robert Dennard’s DRAM vs Magnetic Core Memory — How a Tiny Cell Replaced an Entire Memory Era In the 1950s and 1960s, magnetic core memory was one of the most successful technologies in computing. It was fast, reliable, non-volatile, and trusted inside some of the world’s most important computers. Then IBM engineer Robert Dennard proposed a radically different idea: store a bit of information as electrical charge using an extremely compact dynamic memory cell. There was one major problem. The charge leaked away. DRAM had to be refreshed constantly just to keep its data alive, yet that apparent weakness became part of an architecture capable of scaling far beyond magnetic core. As semiconductor manufacturing improved, memory density increased, cost per bit fell, and entire storage systems shrank from large physical core assemblies into compact integrated circuits. This documentary follows the transition from magnetic core memory and IBM’s early semiconductor research to Robert Dennard’s one-transistor DRAM concept, Intel’s 1103, Mostek’s high-density designs, the rise of semiconductor manufacturing, and the economic forces that ultimately changed computer memory forever. Magnetic core did not fail because it stopped working. DRAM won because the meaning of a “better” memory technology changed. #RobertDennard #DRAM #MagneticCoreMemory #ComputerMemory #MemoryHistory #ComputerHistory #PCHistory #TechHistory #SemiconductorHistory #SemiconductorMemory #DynamicRAM #RAMHistory #IBMHistory #IBMResearch #Intel1103 #IntelHistory #Mostek #FerriteCore #CoreMemory #MemoryTechnology #ComputerEngineering #ElectricalEngineering #Microelectronics #IntegratedCircuits #SemiconductorTechnology #VintageComputing #RetroComputing #HardwareHistory #ComputerDocumentary #TechnologyDocumentary