Mechanical Computers - Differential Analyzers

THE DIFFERENTIAL ANALYSER:

 Vannevar Busch: Differential Analyzer  (1930)

https://www.computerhistory.org/revolution/analog-computers/3/143

 

 

 Rockefeller Diferential Analyzer:

Rockefeller Differential Analyzer (RDA): Wikipedia: 

 https://en.wikipedia.org/wiki/Rockefeller_Differential_Analyzer 

Was an all-electronic version of the Differential Analyzer, which Bush had built at the Massachusetts Institute of Technology RDA was operational in 1942

https://www.computerhistory.org/revolution/analog-computers/3/143/313

RDA Differential

https://www.computerhistory.org/revolution/analog-computers/3/143/429

General Reference:
http://amg.nzfmm.co.nz/differential_analyser_explained.html 

Components:

The Integrator 
The Torque Amplifier 
Input and Output Tables

Example

 Torque Amplifier  schema:

Meccano.  Working Torque Amplifier

https://www.youtube.com/watch?v=l9imJNoidtQ

UCLA's Mechanical "brain" (1948)

 Video shows UCLA's Differential Analyzer, a mechanical computer, in 1948

https://www.youtube.com/watch?v=hIinz4fKGpo

A 50's era Navy's training film series expaining how works a mechanical computer:

  

1953

(Part 1)

1.-  Shafts, Gears, Cams

https://www.youtube.com/watch?v=mpkTHyfr0pM

2.- Cams, Barrel Cam

https://www.youtube.com/watch?v=-F7m02XDfvE

3.- Barrel Cam, Differentials:

https://www.youtube.com/watch?v=JXYPgseaUOY

(Part 2)

4. Integrators:

https://www.youtube.com/watch?v=xVkvr_CoyvI

5.- Integrators

https://www.youtube.com/watch?v=xPVbwJd0Hhs

6.- Integrators and Multipliers

https://www.youtube.com/watch?v=GZI-PydfsQs

7.- Multipliers:

https://www.youtube.com/watch?v=tha2ejeMAJU

Complete NAVY film: 

 1953 US Navy Film: Basic Mechanisms In Fire Control Computers
https://www.youtube.com/watch?v=x9YEPw7_YTk

Mechanical Computer (All Parts) - 
Basic Mechanisms In Fire Control Computers 
https://youtu.be/s1i-dnAH9Y4

FICTION (about Differential analyzer):

Differential Analizer in a fiction film:

Differential Analyzer: "Earth vs. the Flying Saucers (Columbia Pictures 1956)"

https://www.youtube.com/watch?v=TQj3PsSDoUo

LIST OF DIFFERENTIAL ANALYZERS:

 

From:  http://www.meccano.us/differential_analyzers/other_da/index.html

Mechanical Computers:  @macajo Twitter:

https://twitter.com/macajo/status/1209553450486390786?s=20

https://twitter.com/macajo/status/1209553450486390786?s=20