The Memory Chip Industry
The memory chip is one of the foundational architectures for the digital age, acting as the "brain's desk" where data is temporarily held or permanently stored. It is identified into volatile and non-volatile categories, each defined by how it handles data when power is disconnected. Volatile memory functions as the high-speed "workspace" for processors and has recently evolved into HBM (High Bandwidth Memory) to meet the extreme data demands of AI. In contrast, non-volatile memory, primarily NAND Flash, is the permanent storage for SSDs and smartphones, using dense 3D NAND architectures. The new, emerging persistent memories like MRAM and ReRAM is even stronger, which aim to combine the speed of RAM with the storage capabilities of Flash to eliminate the data bottlenecks in modern computing. Section I: History of the Industry The whole story starts around the 1950s. Before silicon, computers used "magnetic-core memory," which was bulky and ha...