1. A system for digitally implementing a class of transforms to process data in real time comprising, a plurality of modules cascaded in stages with each stage having twice the number of modules as the preceding stage, each of said modules including a pair of latches for receiving and temporarily storing data from the preceding module, and an adder/subtractor unit having two units with each input coupled to the output of one of the associated pair of data latches, said adder/subtractor unit having a pair of outputs for providing a first output signal corresponding to the sum of the contents of the pair of associated data latches and a second output signal corresponding to the difference of the contents of the associated pair of data latches, and means for coupling said first and second output signals of each adder/subtractor unit to one of the two associated modules of the next succeeding stage to thereby implement the class of transformers in real time.