Boots – shoes – and leggings
Patent
1982-06-28
1985-03-12
Malzahn, David H.
Boots, shoes, and leggings
G06F 750
Patent
active
045049246
ABSTRACT:
Complex logical mechanism, for simultaneously producing output signals related logically to a set of input signals, implemented in transfer gate pairs. The first transfer gate of each pair is connected generally in series and is controlled by conduction according to the signals applied. The second transfer gate of each pair shunts the output node of its related first transfer gate to ground, when enabled by a control signal complementary to the data pattern applied to the first transfer gate of the pair. This direct control of line voltages affirmatively drives the lines or affirmatively grounds the lines to eliminate back circuits.
Carry propagation to higher order bit positions is along carry propagate lines, with series connected carry propagate first transfer gates. Order positions not having data values appropriate for carry propagation do not transmit carry values--these transfer gates are not controlled for conduction, but are nonetheless subject to possible back circuits. Carry propagate negation second transfer gates, connected in respective pairs with the carry propagate first transfer gates, are controlled by signals complementary to the control signals for the respectively carry propagate transfer gates, and, when enabled, connect the output nodes of the respective carry propagate first transfer gates directly to ground reference potential.
REFERENCES:
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patent: 4422157 (1983-12-01), Vhlenhoff
patent: 4425623 (1984-01-01), Russell
Cook Peter W.
Hsieh Hung-Hui
Miranker Glen S.
International Business Machines - Corporation
Kling Carl C.
Malzahn David H.
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