[008] Lego Technic - Pascaline #01

this is a Lego replica of the mechanical calculator called Pascaline, invented by the mathematician, physicist, inventor, writer and Catholic theologian Blaise Pascal in 1642 this version has 6 number positions, all base-ten, and can add multiple terms until 999,999, it can also subtract by means of 9's complement in this video I made the following operations: 985 + 547 = 1,532 1,532 + 9,724 = 11,256 zeroing 2,753 - 847 = 1,906 1,906 - 956 = 950 it works exactly like the original models built by Pascal, with two differences: - since there are no 10 teeth Lego gear, I used the 20 teeth model, which means that the mechanism 'counts two teeth' for each number - the input of the real Pascaline allowed the user to dial the numbers, much like rotary dial phones, but since I don't have any lego parts which can mimic that, the input is more difficult: the operator has to count positions to enter the numbers the last images show details of the centerpiece of the Pascaline's carry mechanism: the sautoir