Associative memory

Associative memory may refer to:

• Transderivational search in psychology or cybernetics, a search for a fuzzy match across a broad field
• Associative storage, or content-addressable memory, a type of computer memory used in certain very high speed searching applications
• Bidirectional associative memory, a type of recurrent neural network
• Autoassociative memory, all computer memories that enable one to retrieve a piece of data from only a tiny sample of itself
• Hopfield network, a form of recurrent artificial neural network
• Associative memory (psychology), a model for associative memory in the brain
• Associative model of data, a model for associative memory as a data model for computer's database

Associative Memory/Content addressable memory

Many data processing applications require the search of items in a table stored memory. The search procedure as a strategy for choosing a sequence of addresses, reading the contents or memory at each address, and comparing the information re with the item h occurs. selected The time required to and an item stored in memory can be reduced considerably stored data can be identified for access by the content of the data than by an address. A memory unit accessed by content is called an Associative memory or Content address memory. This type of memory is accessed simultaneously and in para on the basis data content rather than by specific address or location. When a word in associative memory. no address is given. The memory is capable of finding empty unused locations to store the word When a word is to read from an associative memory. the content of the word or part of the word, is specified, The memory locates all words which match the specific content and mark them for reading, In associative memory is more expensive than RAM because each cell must have storage capacity as well as logic circuits for matching its content with an external argument. Associative memories are used in applications where the search time is very critical and must very short.