Download Aktu(UPTU) B.TECH- CSE ,Sem 5th CA (Computer Architecture and Organization) Lecture Notes

Bachelor of Computer Science & Engineering 3rd Year (V -VI Semester) Aktu Lecture Notes


NCS- 505 Computer Architecture

Unit I: Introduction:. Digital computer generation, computer types and classifications, functional units and their interconnections, buses, bus architecture, types of buses and bus arbitration. Register, bus and memory transfer. Central Processing Unit: Addition and subtraction of signed numbers, look ahead carry adders. Multiplication: Signed operand multiplication, Booths algorithm and array multiplier. Division and logic operations. Floating point arithmetic operation Processor organization, general register organization, stack organization and addressing modes.

Unit II: Control Unit: Instruction types, formats, instruction cycles and subcycles ( fetch and 8execute etc) , micro-operations, execution of a complete instruction. Hardwire and microprogrammed control: microprogramme sequencing, wide branch addressing, microinstruction with next address field, pre-fetching microinstructions, concept of horizontal and vertical microprogramming.

Unit III: Memory: Basic concept and hierarchy, semiconductor RAM memories, 2D & 2 1/2D memory organization. ROM memories. Cache memories: concept and design issues 9
performance, address mapping and replacement) Auxiliary memories: magnetic disk,magnetic tape and optical disks Virtual memory: concept implementation.

Unit IV :Input / Output: Peripheral devices, I/O interface, I/O ports, Interrupts: interrupt hardware, types of interrupts and exceptions. Modes of Data Transfer: Programmed I/O, interrupt initiated I/O and Direct Memory Access., I/O channels and processors.Serial Communication: Synchronous & asynchronous communication, standard communication interfaces.

1. Carl Hamacher, Zvonko Vranesic and Safwat Zaky, “Computer Organization”, Fifth Edition, Tata McGraw Hill, 2002.
2. William Stallings, “Computer Organization and Architecture – Designing for Performance”, SixthEdition, Pearson Education, 2003.

1. Patterson, Computer Organisation and Design, Elsevier Pub. 2009
2. Vravice,Hamacher & Zaky, “Computer Organization”, TMH
3. Mano,” Computer System Architecture”, PHI
4. John P Hays, “ Computer Organization”, McGraw Hill
5. Tannenbaum,” Structured Computer Organization’, PHI 6.
P Pal chaudhry, ‘ Computer Organization & Design’, PHI


NCS- 505 Computer Architecture 

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  1. Ty so much sir..for the notes ..

  2. Download for unit 4 is unavailable! 😭😭😭

    1. downloads for unit 4 are available plz try again...

  3. I am unable to download unit 4 notes

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  5. I am unable to download unit 2 3 and 4 notes

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    Please Help........

  7. unable to download unit 2 and 3

  8. Link for unit 2 & 3 is not working. Kindly fix it.


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