[Paper chip calculator]
Paper chip computer, Emperor Kangxi of the Qing Dynasty, 16.7cm long, 8.7cm wide and 5cm high
Paper chip hand computer is a kind of computer that was transformed from the Basga computer by Nabal in the early Qing Dynasty. The main part of the instrument is ten pairs of copper shafts embedded in the wooden box, and one end of the shaft is attached with a six-tooth gear. Stick the paper chip on both ends of the copper chip to fix it. The outer cover is a wooden box with sockets. When in use, the key is used to turn the double roller driven by the gear, and the number of the paper chip on it changes constantly, and the calculation is carried out according to the Nabil chip algorithm
![图片[1]-Paper chip calculator-China Archive](https://chinaarchive.net/Qing dynasty/Clockwork instrument/23787[1024].jpg)
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