A Computer That Runs on Marbles
16:30
I Made A Water Computer And It Actually Works
9:58
This Ancient Technology Makes Things Spin Really Fast!
19:22
Mechanical circuits: electronics without electricity
7:46
The World's First Omnidirectional Screen
8:24
Making Non-Electric Circuits With Computer Logic
5:25
Turing Tumble - Calculator
10:23
The Mechanical Integrator - a machine that does calculus
21:12