Boots – shoes – and leggings
Patent
1986-05-28
1989-03-07
Zache, Raulfe B.
Boots, shoes, and leggings
361393, G06F 300
Patent
active
048112755
ABSTRACT:
An easily installable and easily expandable electromechanical memory assembly for a data processing system includes: a frame having a backplane, a plurality of printed circuit board connectors on the backplane, and conductors on the backplane which interconnect the connectors; a controller on a printed circuit board which is plugged into one of the connectors and consists essentially of logic circuitry for generating and receiving control signals on the backplane conductors; and multiple data storage units; each unit being mounted on a separate printed circuit board, plugged into a separate connector, and consisting essentially of a mechanical drive mechanism which reads data by physically moving a data storage medium past a data sensor in direct response to the control signals from the controller on the backplane conductors. Each data storage unit has switches for assigning an address to the drive and has terminals for receiving signals from the backplane conductors which select the drive based on the state of the switches and received signals. These switches are set to assign the same address to each drive. Signals on the backplane conductors which are transmitted from the controller in a daisy-chained fashion to all of the drives are also returned via the backplane conductors to the controller, and are there terminated.
REFERENCES:
patent: 4250563 (1981-02-01), Struger
patent: 4443866 (1984-04-01), Burgiss
patent: 4562535 (1985-12-01), Vincent et al.
patent: 4626846 (1986-12-01), Parker et al.
patent: 4639863 (1987-01-01), Harrison et al.
patent: 4680674 (1987-07-01), Moore
Balogh, Jr. Edward
Faultersack David D.
Peter Jack
Roddy Stephen P.
Thune Eric B.
Fassbender Charles J.
Miller Kenneth L.
Munteanu-Ramnic Florin
Unisys Corporation
Zache Raulfe B.
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