I/O: Sources
CS301: Computer Architecture. Unit 7.1, Unit 7.2, and Unit 7.4. Saylor Academy, 2010. License: CC BY: Attribution.
Wienand, Ian. (2019). Section 3.3. Computer Science from the Bottom Up. License: CC BY-SA: Attribution
These notes by Miriam Briskman are licensed under CC BY-NC 4.0 and based on sources.