Statistical Independence and Threshold Functions

The memory we describe here is a logical and practical outgrowth of the content addressable distributed logic memory of Lee and Paull.1 However, there are several significant differences: the inclusion of a "match" flip-flop and a "control" flip-flop in each cell of the memory, the addition of a "Mark" line to activate many cells simultaneously, and the control of the propagation of the marking signal. As a consequence of these, the memory has some novel capabilities, among which are the ability to simultaneously shift the contents of a large group of cells, thus opening or closing a gap in the memory, and the ability to simultaneously mark strings of interest in separate parts of the memory.