Associative techniques with complementing flip-flops

An associative memory is one in which a word is found by specifying some of, or all of, its contents rather than its storage location. For instance assume that the words 000, 101 and 111 are stored in an associative memory with their storage locations unknown. Specifying 101 to the associative "address register" causes the location containing 101 to respond. Any additional information stored in that location may also be read out.