> I'm not sure it's right to label vacuum tubes and core memory as "DRAM" though. Core memory does need a refresh after a read, but since it doesn't need refre

> I'm not sure it's right to label vacuum tubes and core memory as "DRAM" though. Core memory does need a refresh after a read, but since it doesn't need refreshing otherwise, I'd mark it as SRAM. Williams tube memories seem DRAM like enough to me though.