发明名称 MEMORY SECURITY CIRCUIT
摘要 Apparatus for controlling the operation of a memory device (34) is effective to prevent unauthorized utilization of the memory device (34) upon removal thereof. A memory energizing signal (84) is delayed, the delayed signal being provided to logic means which produces an enabling signal (113) for the memory device (34) if the delayed signal (84) occurs during a predetermined time period determined by a control signal (100) produced in dependence on the energizing signal (84).
申请公布号 WO8200535(A1) 申请公布日期 1982.02.18
申请号 WO1981US00962 申请日期 1981.07.16
申请人 NCR CORP 发明人 DEVCHOUDHURY R
分类号 G06F9/22;G06F12/14;G11C29/00;G11C29/12;(IPC1-7):06F13/00 主分类号 G06F9/22
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