Computer Organization and Architecture (COA) Notes PDF

Computer Organization and Architecture (COA) course is introduced for Bachelor in Engineering (BE) in Institute of Engineering (IOE), Tribhuvan University (TU) with the objectives of providing the organization, architecture and designing concept of computer system including processor architecture, computer arithmetic, memory system, I/O organization and multiprocessors. COA notes are referenced from Computer Organisation and Architecture by William Stallings book.

Read:Computer Organization and Architecture Syllabus of IOE

The following lecture notes of Computer Organization and Architecture (COA)in PDF formats are managed based on the chapters and topics included on the syllabus. The notes (which can be downloaded for free) are applicable for both Computer Engineering and Computer Science (CSE) students. 

  1. Introduction to Computer Organization and Architecture
  2. Central Processing Unit
  3. Control Unit
  4. Pipeline and Vector Processing
  5. Computer Arithmetic
  6. Memory system
  7. Input and Output Organization
  8. Multiprocessors

Special thanks to Er. Hari Aryal sir for compiling the notes. Please let us know if there is problem in any links.


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Raju Dawadi
Raju Dawadi
Raju is currently actively involved in DevOps world and is focused on Container based architecture & CI/CD automation along with Linux administration. Want to discuss with him on any cool topics? Feel free to connect on twitter, linkedIn, facebook.


  1. Rahul says:

    yeah,I like it

  2. Bikram Karki says:

    I click on Instrumentation II and keep getting redirected to this page.

  3. Priya says:

    Sir, want the notes for MicroProgrammed Control unit…….Can you help me??n

  4. khalid says:

    hi… Is their any mentioned practicals note…

  5. Raam says:


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