Signal integrity theory is gaining increasing attention in high speed digital circuit design impedance matching plays an important role.
信号完整性理论在高速数字电路设计中日益被重视，阻抗匹配在信号完整性理论中占有重要地位。
With the rapid development of the electronic technology, high speed digital circuit design is larger and larger in proportion in whole electronic designing field.
随着电子技术的飞速发展，高速数字电路设计在整个电子设计领域所占的比例越来越大，如何处理高速信号问题已经成为一个设计能否成功的关键。
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。
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