[HN Gopher] The Apple-1's shift-register memory
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       The Apple-1's shift-register memory
        
       Author : kens
       Score  : 22 points
       Date   : 2022-04-11 21:07 UTC (1 hours ago)
        
 (HTM) web link (www.righto.com)
 (TXT) w3m dump (www.righto.com)
        
       | mepian wrote:
       | "Access was denied Error code 1020"
       | 
       | Is the site blocking Russian IPs? I managed to open it with VPN.
        
         | kens wrote:
         | Yes, accesses from Russia are currently blocked.
        
       | kens wrote:
       | Author here if anyone has shift register questions :-)
        
         | bingaling wrote:
         | You preempted a question about the lineage from/comparison with
         | acoustic delay lines in footnote 2.
         | 
         | Thanks for the posts :-)
        
       | Taniwha wrote:
       | It's worth realising that shift registers for displays were a
       | kind of obvious thing at the time - our mainframe had operator
       | consoles that used mercury delay lines for this ....
        
         | kens wrote:
         | Was that the IBM 2260 display station? It used sonic delay
         | lines, a 50-foot coil of nickel wire. Torsional pulses were
         | sent into the wire, and it could hold 11,008 bits.
        
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       (page generated 2022-04-11 23:00 UTC)