@misc{noauthor_lego_2013,
	title = {Lego {Pascaline} by {thiagoT5}},
	url = {http://www.youtube.com/watch?v=olfNFXJEZOA&feature=youtube_gdata_player},
	abstract = {This is a lego replica of the mechanical calculator called Pascaline, invented by Blaise Pascal  in 1642.

This version has 6 number positions, all decimals, 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 dials of the real Pascaline allowed the user to dial the numbers, much like older 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. 

Thanks for youtube user Nico71 for inspiring this work.},
	urldate = {2013-12-09},
	month = apr,
	year = {2013},
}

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