Hasso Plattner Institut
Imprint   Data Privacy


The Propp Machine simulator for aggregating model


  1. Click on the arrow buttons in order to add directions to the rotor sequence. Backspace button deletes last chosen arrow.
  2. By clicking on each colored arrow you can change it's color.
  3. Changing color sequence for an image may reveal interesting patters, e.g.: nothing fancy, same image, different colors
  4. If you get confused, press the Explain button.


You can download the applet and run it as a standalone application: propp.jar
Just execute: java -jar propp.jar


This applet should run on Java 1.5. In case of problems please download the latest Java version from Sun: http://www.java.com/download/

Mac users

Java for Mac can be downloaded from Apple website: http://developer.apple.com/java/download/
Since this applet requires Java 1.5 or higher it will not run on Mac OS X 10.3, which supports only Java 1.4.2.

Michał Faleński, Max-Planck-Institut für Informatik 2007-2008