Research on the test technology of sequential logic circuits in the control system of magnetic bearings of hard disk drives 磁懸浮硬盤(pán)轉(zhuǎn)子控制系統(tǒng)中時(shí)序電路測(cè)試技術(shù)
Complex programmable logic device ( cpld ) , usually used to develop asic , is widely used in digital system to accomplish complex combinational and sequential logic 復(fù)雜的可編程邏輯器件( cpld )廣泛地用于數(shù)字系統(tǒng)中,常用作設(shè)計(jì)自己的專用集成電路,可實(shí)現(xiàn)復(fù)雜的組合邏輯和時(shí)序邏輯。
In this paper we discuss mca circuit , the sequential logic for mca data collection , for the setting of the uld , lld and the gain of pga , as well as the combinational logic for decoding circuits of the computer interface , based on cpld 本文詳細(xì)論述了利用cpld實(shí)現(xiàn)的脈沖幅度多道電路及其數(shù)據(jù)采集的時(shí)序控制邏輯、閾值設(shè)定和程控放大倍數(shù)設(shè)定的時(shí)序控制邏四川大學(xué)碩士學(xué)位論文輯、以及與計(jì)算機(jī)接口的譯碼電路等組合控制邏輯。
In digital circuit theory, sequential logic is a type of logic circuit whose output depends not only on the present value of its input signals but on the past history of its inputs. This is in contrast to combinational logic, whose output is a function of only the present input.