Episode 77 - Magnetic Memories
Advent of Computing
00:00
Using a Changing Magnetic Field in a Magnetic Drum
Wang's new memory was meant to be 100 % stationary. So how can you tell that a core is magnetized without moving it? The trick was to flip the bit another time. You just need a changing magnetic field relative to some detector to read from his makeshift memory. Wang set up a secondary coil around the core, then the primary coil would be driven to attempt to flip the core's magnetization. This basic setup, a core with two windings with a reed right cycle, worked surprisingly well. However, it was still a sub optimal solution. Transformer corps took a long time to magnetize. We're talking milla seconds. To us humans, that's not
Transcript
Play full episode
