Boots – shoes – and leggings
Patent
1978-02-16
1979-07-10
Smith, Jerry
Boots, shoes, and leggings
365 5, G06F 748, G11C 1114
Patent
active
041610326
ABSTRACT:
Compact arrangements of two-input magnetic bubble logic gates providing bubble devices for performing serial integer arithmetic on binary integers are disclosed. Using only a small number of different types of logic gates, designs are given for devices for performing serial addition, subtraction, multiplication and division arithmetic operations on binary integers, represented as sequences of magnetic bubbles. All logical interactions use bubble repulsion to prevent bubbles from transferring to adjacent propagation paths via preferred transitions. By using only two-input gates and a pipeline computational structure, hardware design is simplified and advantage is taken of the inherent serial nature of bubble technology. The simple gate interconnection geometry has a minimum of feedback paths and results in devices which are not burdened with excessive numbers of bubble generators, annihilators or crossovers.
REFERENCES:
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patent: 3750106 (1973-07-01), Caron
patent: 3798607 (1974-03-01), Minnick et al.
patent: 3894223 (1975-07-01), Majima et al.
patent: 3983383 (1976-09-01), Naden
patent: 3986016 (1976-10-01), Linn et al.
patent: 4011461 (1977-03-01), Chang et al.
Smith Jerry
The United States of America as represented by the Director of t
Utermohle John R.
Young Barry N.
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