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 digital logic chip of the invention and the method of design for testing can realize the observation of circuit scanning test by adopting few pins.
本发明的数字逻辑芯片及其可测试设计的方法，能够通过少量管脚实现电路在扫描测试时的可观测。
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