by Morgan Davis ç¾ä»£ã§ã¯å¤ãã®äººã ãã¹ãã¼ããã©ã³ã®é»åã¢ããªã使ã£ã¦ãã¾ãããéå»ã«ã¯é»åå¼ã§ã¯ãªãæ©æ¢°å¼ã®è¨ç®æ©ã使ããã¦ãã¾ããã1948å¹´ã«ç»å ´ãã¦ä»¥éãç´20å¹´ã«ãããå°çä¸ã§æé«ã®ãã¼ã¿ãã«è¨ç®æ©ã ã£ããã¯ã«ã¿è¨ç®æ©ãã¯ãããã¹ã®å¼·å¶å容æã«å容ããã¦ããå人ã«ãã£ã¦çºæãããã¨ã®ãã¨ã§ããã¯ããã¸ã¼ç³»ã¡ãã£ã¢ã®Ars Technicaããã®æ´å²ã«ã¤ãã¦ã¾ã¨ãã¦ãã¾ãã The hand-cranked calculator invented by a Nazi concentration camp prisoner | Ars Technica https://arstechnica.com/science/2021/12/the-remarkable-history-of-the-hand-cranked-curta-mechanical-calculato
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