1. 明德扬设计规范，youku.com/v_show/id_XOTI2NDI5MDI0.html

2. 一个always只设计一个信号，youku.com/v_show/id_XOTI2MzY3OTUy.html

3. 时钟复位设计规范，youku.com/v_show/id_XOTI2MzY3Njc2.html

4. 组合逻辑补全条件，youku.com/v_show/id_XOTI2MzY3NDQ4.html

5.always练习1，youku.com/v_show/id_XOTI2MzYzNTY4.html

6.always练习1答案，youku.com/v_show/id_XOTI2NDI5MDI4.html