Apparatus for transferring data from a volatile main memory to a store unit upon the occurrence of an electrical supply failure in a data processing system

摘要: The disclosure describes improved apparatus for transferring data from the main memory of a processor to peripheral permanent storage unit, such as recording holder driven by driving device, in response failure electrical supply processor. includes frequency converters supplying voltage about 500 milliseconds after power fails. Logic and selector circuitry reads contents into selected unit within millisecond time period so that perishable will not be lost.