Packed Binary Coded Decimal Simulation

written by Teresa Carrigan


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HOW TO USE IT

The setup button generates a decimal number, and initializes variables.

The slow-motion slider is an easy way to adjust the speed of the display. Set it to zero if you want to show the final result as quickly as possible. 0.3 is a good setting for most purposes.

The step button demonstrates the next step of the method. It then stops so you can take notes. This is useful when you are first learning the method.

The go button demonstrates the remaining steps, at a speed determined by the slow-motion slider. This is useful when you do not need to take notes between each step, or do not wish to press the step button sixteen times to get an answer. If you want to pause the demonstration, simply click the go button a second time and it will stop after it finishes the current step. You may then click go a third time to resume.

The show-again button restarts the demonstration using the same decimal number, so that you can see the same problem several times if you wish.


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Applets on this website were written by Teresa Carrigan in 2004, for use in computer science courses at Blackburn College, with the exception of the Fireworks applet. The applets made with NetLogo require Java 1.4.1 or higher to run. The applets made with NetBeans require Java 1.4.2 or higher to run. Applets might not run on Windows 95 or Mac OS 8 or 9. You may obtain the latest Java plugin from Sun's Java site.