Core memory enhanced the productivity of early computer operators. Not only does core memory store information but also does not need power to maintain memory.
Wang & Woo created computer memory that would sit on tiny magnetic rings, strung together into cores. These were smaller than vacuum tubes and used less power. Furthermore, they did not lose their memory when the system lost power. Eventually, Wang and Woo engineered the cores ever-smaller.
Eventually, DRAM made core memory obsolete. It stored more and cost less.
Wang worked for Harvard, but they were not interested in his technology, enabling him to patent it himself.
Wang Laboratories thrived for decades but filed for bankruptcy Aug. 18, 1992. The company survived bankruptcy and rebuilt. Consequently, Wang Global still exists.