present invention permit can be particularly advantageous consider for example reading data from a disc drive or writing data to a disc drive in the reading application the analog circuitry can be used to read and store into a large memory portions of disc drive data while the high speed digital circuitry is on for only those small periods of time necessary to extract and process the stored data for later use as the large memory begins to fill the reading cycle from the disc drive is paused while the high speed digital circuitry extracts and processes the stored data alternatively as the large memory begins to fill the location on the disc drive for data already read into the memory is recorded for subsequent reading by the analog circuitry so as to permit access and extraction of the data in memory by the high speed digital circuitry this is one of a number of example data transfer applications where the proportions of on and off time for the analog and digital circuitry are not critical and the application can permit variances of the digital circuitry being on or off for more than fifty percent of the time with the analog circuitry being off or on for the remaining time further in connection with such applications that are not data intense the storage medium between the analog and digital circuitry can be implemented in analog form in a manner that does not generate significant amounts of noise this implementation as well as other implementations using analog memory blocks for processing of high data intense applications.