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The K'NEX Computer
Mechanical Computing: Thinking with Balls
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About the Project
Matt Donahoe
and
Jeff DeCew
built the K'NEX calculator and other logic devices while attending
Olin College
.
It started as a final project for the Computer Architecture class and became a fun side project. The goal was to create a 4-bit programmable computer, but we settled for a calculator instead.
Olek Lorenc and Doug Ellwanger contributed to the effort.
Ball Theory
Half Adder
Full Adder
4-Bit Adder
Accumulator
Decoder
Posts
Nov 2006
(4)
Dec 2006
(3)
Jan 2007
(4)
Feb 2007
(1)
Mar 2007
(1)
Dec 2020
(1)
Links to devices by others
Turing Tumble
LEGO DigiComp II
Wood & Marble Adder
K'NEX Adding Machine
LEGO Logic Gates