Boots – shoes – and leggings
Patent
1994-01-05
1995-02-14
Mai, Tan V.
Boots, shoes, and leggings
G06F 750
Patent
active
053901371
ABSTRACT:
A carry transfer apparatus having a plurality of groups is provided. Each of the groups contains an inverter having an input terminal connected to a first signal input terminal, a first NMOS transistor having a gate connected to an output terminal of the inverter and a drain connected to a second signal input terminal, a PMOS transistor having a gate connected to the output terminal of the inverter, a source connected to a power source voltage terminal and a drain connected to a source of a PMOS transistor in the next group, a second NMOS transistor having a gate connected to the output terminal of the inverter and a drain connected to a ground voltage terminal, a third NMOS transistor having a gate connected to a source of the second NMOS transistor and to a gate of a corresponding NMOS transistor in the next group, a drain connected to a carry signal input terminal and a source connected to a source of the first NMOS transistor, a fourth NMOS transistor having a gate connected to the first signal input terminal, a drain connected to the carry signal input terminal and a source connected to the sources of the first and third NMOS transistors and to a drain of a corresponding NMOS transistor in the next group, and an exclusive-NOR gate having two input terminals coupled respectively to the first and carry signal input terminals.
REFERENCES:
patent: 3717755 (1973-02-01), Briley
patent: 3728532 (1973-04-01), Pryor
patent: 3843876 (1974-10-01), Fette et al.
patent: 4425623 (1984-01-01), Russell
patent: 4504924 (1985-03-01), Cook et al.
patent: 4763295 (1988-08-01), Yamada et al.
Goldstar Electron Co. Ltd.
Mai Tan V.
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