計算機之前的計算機 Calculator before calculator丨Chaos Museum

★Subscribe to ChaosMuseum: http://bit.ly/2Q9cuFd ★Click the link to translate: http://bit.ly/2Qv8b7o 機械計算機。 Mechanical calculator. All the musical notes scale are calculated. Subscribe / Like / Share -- NOW Unknown fun fact that you should know ! New video update: -- every Monday, Wednesday, Friday You can also find ChaosMuseum here: ★Weblog: http://bit.ly/2w0xkgP ★Bilibili：http://bit.ly/33b4OHL ★知乎：http://bit.ly/30S21St ★Wechat：混亂博物館