发明授权
- 专利标题: Non-volatile memory device for a programmable controller
- 专利标题(中): 用于可编程控制器的非易失性存储器件
-
申请号: US706571申请日: 1985-02-28
-
公开(公告)号: US4713756A公开(公告)日: 1987-12-15
- 发明人: Ralph E. Mackiewicz , Michael A. Kuhn
- 申请人: Ralph E. Mackiewicz , Michael A. Kuhn
- 申请人地址: PA Pittsburgh
- 专利权人: Westinghouse Electric Corp.
- 当前专利权人: Westinghouse Electric Corp.
- 当前专利权人地址: PA Pittsburgh
- 主分类号: G11C14/00
- IPC分类号: G11C14/00 ; G06F1/00 ; G06F13/00
摘要:
A nonvolatile memory storage device for a programmable controller to provide an archival back-up for user programs with the use of a battery or other alternate back-up power source. The device can be attached to the programmable controller using a frangible tampering indicator that will break on the removable of the device from the programmable controller.
公开/授权文献
- US5818429A Coordinates input apparatus and its method 公开/授权日:1998-10-06
信息查询