Programmable arithmetic and logic bubble arrangement

Details Programmable arithmetic and logic bubble arrangement Programmable arithmetic and logic bubble arrangement

1974-05-10

1976-09-28

Malzahn, David H.

Registers

Transfer mechanism

Traveling pawl

340174TF, G06F 750, G11C 1114

Patent

active

039833836

ABSTRACT:
A programmable bubble material arrangement employing a plurality of logic components for performing eight different possible logic and arithmetic operations on two applied serial digital data streams. Separately applied control signals in the form of bubbles are applied to the arrangement to selectively program the arrangement, as desired. The logic components include transient bubble switches, resident bubble switches, bubble generators, bubble annihilators, exclusive merge elements, disjoint crossover elements and delay elements. The operations selectively performed are: A + B, A .sym. B, AB, A plus B with carry, A + B, A .sym. B, AB, and A plus B with carry. The arrangement operates equally with data streams either loosely packed (data bubbles periodically placed in the stream) or tightly packed.

REFERENCES:
patent: 3689751 (1972-09-01), Chow
patent: 3723716 (1973-03-01), Bobeck et al.
patent: 3798607 (1974-03-01), Minnick et al.
M. R. Garey, "Resident-Bubble Cellular Logic Using Magnetic Domains" IEEE Trans-on Computers Apr. 1972 pp. 392-396.

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