Boots – shoes – and leggings
Patent
1977-01-24
1979-05-08
Springborn, Harvey E.
Boots, shoes, and leggings
G06F 300
Patent
active
041539427
ABSTRACT:
A one bit industrial control unit for executing a program of non-arithmetic instructions includes a one-bit bidirectional data conductor, a 4-bit instruction register and instruction decoder, and control logic coupled to the instruction decoder for generating control signals to effect execution of the non-arithmetic instructions. A logic unit having a first input coupled to the bidirectional data conductor, a second input, and an output is capable of performing logical AND, AND-complement, OR, OR-complement, and Exclusive NOR functions upon logical signals applied to its two inputs. A result register is coupled to the output of the logic unit. The output of the result register is fed back to the second input of the logic unit and is coupled by way of a write gate to the first input of the logic unit. An output enable instruction may be decoded by the instruction decoder to load and to enable an output latch, which in combination with gating circuitry activated by a store or a store-complement instruction, generates a write signal. An input enable instruction can be decoded to provide an input to an input enable to latch to control loading data from the bidirectional data conductor. The output of the input enable latch serves to provide a conditional inhibit to coupling of data from the bidirectional data conductor to the first input of the logic unit.
REFERENCES:
patent: 3293611 (1966-12-01), Goldfeld et al.
patent: 3753243 (1973-08-01), Ricketts Jr. et al.
patent: 3909789 (1975-09-01), Holtey et al.
patent: 4001789 (1977-01-01), Sweet
Barbee Joe E.
Motorola Inc.
Springborn Harvey E.
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