The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jun. 07, 1994

Filed:

Aug. 17, 1992
Applicant:
Inventor:

Hirohisa Shishikura, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ; H01L / ;
U.S. Cl.
CPC ...
36523003 ; 36518903 ; 365228 ; 365229 ; 365226 ;
Abstract

In a combination of a printed wiring board and a memory device selecting circuit provided on the printed wiring board, the printed wiring board is provided with a predetermined number of device mount areas and a conductor pattern for connection with memory devices in the device mount areas. The number of the memory devices actually mounted in the mount areas is set in a device-number setting device, and in accordance with a predetermined bits of address code and on the basis of the number set, device select signals are produced, and are distributed over the conductor pattern. Identical printed wiring boards and memory device selecting circuits can be used, without alteration or re-designing, for forming electronic devices having different memory capacities or different number of memory devices.


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