Digital computer structure providing arithmetic and boolean logi

Details Digital computer structure providing arithmetic and boolean logi Digital computer structure providing arithmetic and boolean logi

1976-09-24

1980-07-08

Malzahn, David H.

Boots, shoes, and leggings

364200, G06F 906

Patent

active

042120764

ABSTRACT:
A digital computer of relatively simple and efficient structural organization which is capable not only of conventional arithmetic operations according to a program but also of (i) performing chained Boolean logic processing on any selected bit of any of various selected words held in memory, (ii) using the logic processing result by storing it at any selected bit location in any of various selected words held in memory, and/or (iii) causing different, predetermined instructions within a program to have their execution dependent upon the results of previously performed single bit logic processing. The logic processing is carried out in response to specially coded instruction words which may be randomly interspersed between conventional arithmetic instruction steps within an overall program. Existing registers and apparatus components necessary for conventional arithmetic operations are utilized in large measure to carry out the routing of signals to and from the logic processor, and very little added hardware is required to create the logic processing, storing, and dependent conditioning.

REFERENCES:
patent: 3849765 (1974-11-01), Hamano
patent: 3878514 (1975-04-01), Faber
patent: 3922538 (1975-11-01), Cochran et al.
patent: 3939335 (1976-02-01), Brantingham
patent: 3942158 (1976-03-01), Dummermuth
patent: 3990052 (1976-11-01), Grunev
patent: 4010452 (1977-03-01), Cazanove

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