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1. Hattie Cat (hattiecat@quitter.no)'s status on Thursday, 23-Mar-2017 20:55:18 UTC Hattie Cat
   Curta mechanical calculator. Invented in the 1930s, considered the best pocket calculators until the 1970s. https://quitter.no/attachment/1026130
   • @mcscx@quitter.se repeated this.
   • @mcscx@quitter.se (mcscx@quitter.se)'s status on Thursday, 23-Mar-2017 22:28:44 UTC @mcscx@quitter.se

     • 馬鹿野狐(ばかやこ)✔
     @hattiecat @takeshitakenji it seems multiplying on the Curta is done much like with this type of calculator,in principle http://qttr.at/1qui
   • @mcscx@quitter.se (mcscx@quitter.se)'s status on Thursday, 23-Mar-2017 22:50:13 UTC @mcscx@quitter.se

     • 馬鹿野狐(ばかやこ)✔
     @takeshitakenji @hattiecat in Germany almost all shops& restaurants use EPOS computers ("electronic point-of-sale"). Required by authorities
   • @mcscx@quitter.se (mcscx@quitter.se)'s status on Thursday, 23-Mar-2017 22:55:48 UTC @mcscx@quitter.se

     • 馬鹿野狐(ばかやこ)✔
     @hattiecat @takeshitakenji banks used many printing adding machines, but not so much the non-printing & multiplying type http://qttr.at/1qul