Research on the test technology of sequential logic circuits in the control system of magnetic bearings of hard disk drives 磁悬浮硬盘转子控制系统中时序电路测试技术
Complex programmable logic device ( cpld ) , usually used to develop asic , is widely used in digital system to accomplish complex combinational and sequential logic 复杂的可编程逻辑器件( cpld )广泛地用于数字系统中,常用作设计自己的专用集成电路,可实现复杂的组合逻辑和时序逻辑。
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 本文详细论述了利用cpld实现的脉冲幅度多道电路及其数据采集的时序控制逻辑、阈值设定和程控放大倍数设定的时序控制逻四川大学硕士学位论文辑、以及与计算机接口的译码电路等组合控制逻辑。
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.