> he’s well known for his TTL Cookbook and CMOS Cookbook. Those two books were my best purchases back in the day, they helped immensely to grasp the technology

> he’s well known for his TTL Cookbook and CMOS Cookbook. Those two books were my best purchases back in the day, they helped immensely to grasp the technology. I see they're now free for download at Don's page, and they're still relevant today. I would highly recommend them to all newcomers to electronics.