Abstract: A reset mechanism for a random access memory array comprises an auxiliary reset circuit, which does not require modification of the contents of the memory itself. For a random access memory capable of storing M, N-bit words, the auxiliary mechanism includes a plurality of M reset state circuits that are respectively associated with the M words of memory. The reset state circuit preferably comprises an additional `resetable` memory cell for each word of memory, which is integrated within the structure of the memory itself. In order to reset one or more words of memory, the associated reset state circuits are placed in a reset state-representative condition. The state of each reset state circuit is used to controllably mask (e.g. is logically ANDed with) the contents of its associated word of memory, whenever that word is read out. If the reset memory cell has been cleared, then regardless of the contents of its associated word in memory, the mask will cause the addressed memory word to be output as all zeros.

Abstract: A convolver including a matrix of multipliers for providing a plurality of products PiCj of input data Pi and a dedicated coefficient Cj and each connected to a data input by a buffer which stores and delays input data Pi as a function of its position in the matrix and the length of the row M of the input data array. The buffers include row buffers which are programmable for various input data array row lengths M as well as programmable input buffer stages. A second data input is selectively connected to the multipliers or to an output adder for connection to external delay units or cascade connection to other convolvers. Unique control logic is provided to change the structure of the convolver as well as reset and program various elements using common inputs.