In the United States the Bell System (American Telephone & Telegraph) also used twistors with permanent magnets as the "Program Store" or main memory in their first electronic telephone switching system, the 1ESS as well as others in the ESS series of electronic telephone switches, and did so up to the 4ESS switch introduced in 1976 and sold into the 1980s.
memory | Read-only memory | Elephant's Memory | Random-access memory | Memory Stick | Memory | Flash memory | memory management unit | Direct memory access | virtual memory | read-only memory | In Memory of Elizabeth Reed | Computer memory | An Accidental Memory in the Case of Death | World Memory Championships | Virtual memory | The Persistence of Memory | Sing, Memory | random-access memory | Overdrawn at the Memory Bank | Memory Almost Full | I'll Kiss Your Memory | HP Continuous memory | flash memory | false memory syndrome | Episodic memory | core memory | A Christmas Memory | You Can't Put Your Arms Around a Memory | William Brumfield at an April 18, 2013 event "Memory, Commemoration, Memorialization: Moscow’s Western Battlefields" at the Kennan Institute. |