公开(公告)号：JPH11251538A

公开(公告)日：1999-09-17

申请号：JP539399

申请日：1999-01-12

Applicant: IBM

Inventor： TIMOTHY J DILL ,  KELLOGG MARK WILLIAM ,  BRUCE GERALD HAZELZETT

IPC: H01L27/10 ,  G11C5/00 ,  G11C5/06 ,  G11C8/12 ,  G11C11/401 ,  H05K1/11

Abstract: PROBLEM TO BE SOLVED: To obtain a module functioning as a DIMM or an SIMM when it is inserted into an old or new computer, respectively, by designing the module to emulate a DIMM or an SIMM, respectively, when it is inserted into a DIMM socket or an SIMM. SOLUTION: A DRAM array 27 and a path gate circuit 28 are mounted on a card 10 being interconnected electrically. When a specified edge on the card is inserted into a counterpart DIMM or SIMM socket mounted on a computer system board by selecting pads 22, 24, the path gate circuit is activated or inactivated selectively through selective bias thereof. Consequently, a module functions as an SIMM or a DIMM, respectively, when it is inserted into an SIMM socket or a DIMM socket.