Memory with redundancy

Claim 1

A word-organized memory comprising a plurality of grouporganized words and a plurality of redundant words, a plurality of memory elements being reserved for each word and for each redundant word, and including first selection members for selecting word groups, second selection members for selecting words in a word group and third selection members for selecting a redundant word substituting a defective word instead of selecting this defective word, and including an indicator address memory in which address data of the defective words and of the redundant words substituting the defective words are laid down, and an address comparator for controlling the second selection members or, in case of a defective word, for controlling the third selection members, characterized in that a word group comprises both words and redundant words, that the indicator address memory comprises per word group the address parts of the defective words in the group and at least comprises the address data of the redundant words of that group substituting the defective words due to the location of said address parts in a word of the indicator address memory, that means are provided by whicH the address of the indicator address memory associated with a group upon selection of this group and simultaneously be selected, the address comparator being adapted for comparing the address parts by which at least the location of a word to be selected is determined in a group with the selected above-mentioned address parts for that group from the indicator address memory.