Accession Number : ADD007349

Title :   Apparatus for Expanding the Memory of a Mini-Computer System.

Descriptive Note : Patent,


Personal Author(s) : Page,Robert E ; Brackett,Raymond B

Report Date : 29 Apr 1980

Pagination or Media Count : 7

Abstract : Apparatus for storing information to be used by a data processing system which employs a mini computer, where the mini computer is incapable of addressing more than a specified maximum number of discrete storage locations. The apparatus includes a plurality of memory modules for providing a number of information storage locations which exceeds the specified maximum number of the mini computer, each memory module including a plurality of memory sections, each memory section for providing a number of information storage locations which does not exceed the specified maximum number. The apparatus further includes a component for generating memory select signals, each of the memory select signals corresponding to a different one of the memory sections. An additional component, which is responsive to the memory select signals, is provided for coupling the data and address buses of the mini computer to a given one of the memory sections when the memory select signal corresponding to the given memory section has been generated, whereby the mini computer is capable of selectively accessing any one of the memory sections. (Author)

Descriptors :   *Patents, *Memory devices, *Minicomputers, Addressing, Input output devices, Access, Circuit analysis, NAND gates

Subject Categories : Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE