The design method of LED big screen scanning circuit is introduced, and the virtues of programmable logic device application on high-speed digital system are presented.
介绍了LED大屏幕扫描电路的设计方法，阐述了可编程逻辑器件在高速数字系统应用中的优点。
After the system-level spec and the division of the design hierarchy are comfimed, we start to design the digital logic circuit from the bottom for the pixel machine .
在明确了系统级的总体规划以及设计层次的划分以后，我们从系统的最底层开始进行数字逻辑电路的设计。
The article explores the evaluation of the system, content, method, approach, space and effect of teaching on "Digital Logic Electric Circuit" under 21 "century."
探讨了数字电路面向21世纪的教学体系、教学内容、教学手段、教学方法、教学空间、教学效果评估。
The joint control of auto chassis dynamometer system and CFVCVS is accomplished by means of simple and reliable TTL digital logic circuit in the exhaust gas evaluation test.
以简单、可靠的TTL数字逻辑电路实现了汽车底盘测功机系统和尾气采集系统的联机控制。
At high speeds, logic signals often appear hairy, jagged and distorted because of fast signal rise and fall time. We must avoid these phenomena in the high-speed digital circuit system.
数据速率的提高导致数字信号的上升沿和下降沿时间不断缩短、脉宽变窄和周期减小，从而使数字信号在传输过程中出现毛刺、扭曲和扩展等畸变现象。
At high speeds, logic signals often appear hairy, jagged and distorted because of fast signal rise and fall time. We must avoid these phenomena in the high-speed digital circuit system.
数据速率的提高导致数字信号的上升沿和下降沿时间不断缩短、脉宽变窄和周期减小，从而使数字信号在传输过程中出现毛刺、扭曲和扩展等畸变现象。
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