发明名称 System for inputting a security code to a computer
摘要 A system for providing a security code to a computer includes security bit input logic for each bit of the security code. The input logic includes a plurality of output lines whereby the security bit can be provided on any combination of the output lines selected. Output line selection logic selects the output line over which the bit is provided. The input logic is sequentially scanned whereby the security bits are sequentially provided to the computer.
申请公布号 US4538027(A) 申请公布日期 1985.08.27
申请号 US19820402426 申请日期 1982.07.28
申请人 RCA CORPORATION 发明人 DEYER, CRAIG E.
分类号 G06F21/00;(IPC1-7):H04K1/00 主分类号 G06F21/00
代理机构 代理人
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