Woodwork hacker Matthias Wandel has built this amazing binary marble adding machine. The device can store the binary states of six bits, and use them to add numbers from one to 63. It works with ...
My last column introduced the concepts underlying BCD (binary-coded-decimal) representations. In particular, we considered unsigned versus 10s-complement versions of BCD numbers. In this column we are ...
A while back we looked at [Matthias’] one-pin dot matrix printer. Now we’re jumping over to his woodworking website to feast on his wooden binary adding machine. His creation uses glass marbles as the ...
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