Arithmetic logic unit of a sequence controller

Details Arithmetic logic unit of a sequence controller Arithmetic logic unit of a sequence controller

1982-02-22

1986-11-04

Chan, Eddie P.

Boots, shoes, and leggings

364900, G06F 1546

Patent

active

046213171

ABSTRACT:
An arithmetic logic unit for a stored program sequence controller stores a program equivalent to a relay sequence in a program memory and executes sequence control in accordance with the stored program. A first push-down storage register for sequentially storing logical operation results at branch start points of the relay sequence and a second push-down storage register for sequentially storing logical operation results for branches connected to the branch points based on the logical operation results stored in the first push-down storage register are provided. The arithmetic logic unit carries out the operations based on the logical operation results stored in the first and second push-down storage registers.

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patent: 4432047 (1984-02-01), Okayama
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