Boots – shoes – and leggings
Patent
1976-05-26
1977-08-02
Thomas, James D.
Boots, shoes, and leggings
G06F 1300
Patent
active
040400360
ABSTRACT:
A system is provided for gathering by input groups the counts of busy conditions of 1,024 inputs terminated on 32 input scan cards with each card terminating 32 inputs. A scan circuit selects the cards one at a time in succession for scanning and causes the inputs of each selected card to be scanned one input at a time in succession so that a single output lead common to all inputs of all cards carries a succession of busy signals according to successively scanned busy inputs. Each card is provided with a switch settable into one of five positions according to whether the count of busy input conditions of that card is to be accumulated in groups of one, two, eight, 32, or 64 inputs. A grouping circuit counts the number of successively scanned inputs and provides a succession of groups signals corresponding to successive counts of the numbers of inputs specified as successive groups by the switch settings of successively selected cards. A memory match circuit generates a succession of different seven-digit straight binary codes corresponding to successive group signals. The 128 possible seven-digit codes (0000000 to 1111111) correspond to the memory access addresses of a 128-section memory circuit. An addressing circuit generates all 128 codes each time that each single input is scanned; and, the memory access circuitry of the memory circuit is advanced in synchronism with the generation of all 128 codes by the addressing circuit. The memory match circuit allows each input busy signal to be accumulated as part of an input group busy count at that memory address corresponding to that one of the 128 codes which matches the code generated by the memory match circuit.
REFERENCES:
patent: 3281793 (1966-10-01), Oeters
patent: 3344406 (1967-09-01), Vinal
patent: 3629855 (1971-12-01), Conley
patent: 3736381 (1973-05-01), Johnson
patent: 3927267 (1975-12-01), Voyer
patent: 3936611 (1976-02-01), Poole
Bell Telephone Laboratories Incorporated
Thomas James D.
Turner S. N.
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