Boots – shoes – and leggings
Patent
1983-04-08
1986-04-29
Malzahn, David H.
Boots, shoes, and leggings
364167, 318570, G06F 102
Patent
active
045861528
ABSTRACT:
An endless counting apparatus comprises a first memory for storing a code of a first predetermined number of bits sufficient to represent the maximum value of each coded input expressed according to the binary notation, a second memory for storing an endless-making code of a second predetermined number of bits of higher order than and contiguous to the less and least significant bits stored in the first memory, and a control circuit for adding or subtracting the value of the coded input to or from the contents of the first and second memories depending on the input value to be counted and applying the result of addition or subtraction to the first and second memories. A method for endless counting by such an apparatus comprises clearing the most significant bit of the endless making code stored in the second memory when the code stored in the second memory has attained a value which causes an overflow due to a carry from the contents of the first memory if the carry occurs, and setting the most significant bit of the endless-making code stored in the second memory when the code stored in the second memory has attained a value which causes an underflow due to a borrow from the contents of the first memory if the borrow occurs.
REFERENCES:
patent: 3674999 (1972-07-01), Kelling
patent: 3740535 (1973-06-01), Szabo
patent: 4245297 (1981-01-01), Bertram
patent: 4313173 (1982-01-01), Candy et al.
Hayashida Hiroshi
Ishizaki Kosho
Miyashita Kunio
Morinaga Shigeki
Takahashi Tadashi
Hitachi , Ltd.
Malzahn David H.
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