XPost: comp.mobile.android, alt.comp.os.windows-10   
   From: janis_papanagnou+ng@hotmail.com   
      
   On 26.02.2025 08:53, Arno Welzel wrote:   
   >> [...]   
   > [...]   
   >   
   > Even machines with core memory still had some kind of external storage   
   > (punched tape, magnetic tape, drum memory etc.) because you still need   
   > some kind of permanent storage even with core memory.   
      
   Yes, sort of. - It's not that simple, though...   
      
   External permanent storage was also used because of its "mass storage"   
   property. Consider for example large amounts of data to be processed   
   using tapes; some algorithms like 'merge-sort' still reflect that.   
   And drums were (AFAICT) used as (compared to hard disks) fast-access   
   memory not as permanent storage; their capacity was not that large but   
   they had a lot of fixed heads to read/write data in parallel.   
      
   As mentioned elsethread; the storage properties define their possible   
   uses, and there are a lot more properties than permanent/volatile.   
      
   Janis   
      
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