Transmission Encodings Simulation

written by Teresa Carrigan


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HOW TO USE IT

The setup button generates a random bit pattern, and initializes variables for the chosen encoding.

The random button selects a random encoding scheme, and then sets up a random bit pattern.

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 processes the next bit of the message to be sent. It then stops so you can take notes. This is useful when you are first learning an encoding method.

The go button processes the remaining bits, 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 change encoding button resets the screen without changing the bit pattern. This allows you to select a different encoding scheme for the same bit pattern.

The encoding choice box allows you to select the encoding scheme to be demonstrated. Refer to a textbook or lecture notes for details on the various encoding schemes.


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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.