FACOM128B has been operating in Japanese laboratories Fujitsu for about 60 years. In my opinion, this is not an ordinary computer but it is an unusual device that has greatly helped rebuild the Japanese industry and stave off the post-war crisis. FACOM128B is based on relays, it is older technology than electronic lapms. The calculations were used in implementing large-scale lens production. It is thanks to FACOM128B that Japan has such a well-developed industry in this field. The computer uses a special Fujitsu program to maintain the efficiency of old machines. It’s a piece of history that may no longer play such a significant role as it used to be, but it certainly reminds you of its golden time where it played a significant role for decades.