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Besides teaching, Andrew S. Tanenbaum is also known for writing computer science textbooks. Tanenbaum is a Dutch computer scientist and professor emeritus at Vrije Universiteit Amsterdam, known for his work on operating systems, including the Minix operating system, which he developed in the 1980s as an educational tool. He has also written several popular computer science textbooks, including "Operating Systems: Design and Implementation" and "Computer Networks."