pro: Ken Yang is a very nice guy, knowledgable professor.

cons:
1. He scanned through a hundred slices in one and a half hour, with brief/no explanation, with soft voice. I got lost after 30 mins of lecture.
2. He doesn't care too much about students besides teaching. He is not responsive on the questions in Piazza (class forum for students to ask question).
3. His grading is not fare, tests and homework does not reflect to the lecture.

Conclusion: Nah~! please try to avoid him. He is the second worst EE professor in UCLA. The worst one is Jason Woo who is his friend. If you have to take him, GOOD LUCK!

While the course is a prereq to almost all courses for the digital circuits domain, I highly recommend not taking it under Prof. Ken Yang if possible. This prof was terrible truly. All the learning that I did was from my classmates. The classes were never useful, he just read through the slides (which, mind you, he doesn't make on his own: he borrows them from Prof. Markovic). There was absolutely no interaction with the professor outside of class. No one thought going to his office hours would be useful. The assignments I would say were actually helping and made the content more clear but not because they were discussed very well later on or the solutions were very clear - it was because of the discussions with other students.
To top that off, he picked an equally bad TA who consistently delivered very bad discussion sections. He even sometimes made mistakes on the piazza. Piazza was treated like a place where the prof can ask the students to go and post their doubts. This way the prof can get the onus of answering off his head. I think the TA was a bit more helpful when you met him in person or during office hours.
The project time was horrible as well, there was no help whatsoever from the side of the TA. He directly uploaded the last year's project prompt because supposedly the professor had given him a deadline to upload the project prompt. The real prompt came up only after 5 more days which included a weekend. This time was considered by the prof to be available for our project when it was really not because he never goes through the stuff posted on piazza. Often homework solutions were wrong as well.
This was a terrible experience.

This professor is very nice and surely, he knows a lot about his area. But what is confusing is that he is assuming his students a professor too! His lecture is totally a disaster. Every lecture he flows with 60-100 page slides, which makes me rather confusing. His homework and project are very very difficult and time consuming. It turns out that more than 60 people choose his class at the beginning and 40 left. I'm sorry about this professor but he really should put more emphasis on working out what a student really needs.