Hamming codes can be used to find and fix errors in data. For example, the data stored in RAM (memory) can be checked using Hamming codes.
In this app, error detection and correction are described. Then a simple example is given, which shows Hamming codes being used to check data. A version of the algorithm used here (written in C) can be saved to your device.
This app also calculates Hamming codes for any data width (up to 999 bits), and the results can be saved to your device.
Finally, there is a short description of the arithmetic used for Hamming codes.