ANU UG (B.Sc) /Degree 3rd Sem Computer Organization Unit Wise Important Questions

 The following are the Acharya Nagarjuna University UG 3rd Sem Computer Organization Unit Wise Important Questions for your semester and internal exams. By perparing these questions you get good marks in your semester exams.

UNIT-I  (Register Transfer Language & Micro-Operations + Basic Computer Organization and Design):

5 Marks Questions

• Define Register Transfer Language (RTL). Explain its importance in computer organization.

• List and explain different types of computer registers with examples.

• Write short notes on bus and memory transfer operations.

• Differentiate between arithmetic, logic, and shift micro-operations with one example each.

• Explain the structure and role of the Arithmetic Logic Shift Unit (ALSU).

• Define instruction code. What is the role of opcode and address fields?

• Write short notes on the instruction cycle.

• What are Register-reference instructions? Give two examples.

• Explain the concept of memory-reference instructions with examples.

• Write a short note on I/O and interrupt handling.

10 Marks Questions

• Explain in detail the functional units of a computer system with a neat diagram.

• Describe the Register Transfer Language (RTL) with suitable examples for register transfer, bus transfer, and memory transfer.

• Discuss various arithmetic, logic, and shift micro-operations. Illustrate with block diagrams.

• Explain the design and working of the Arithmetic Logic Shift Unit (ALSU).

• Describe the instruction cycle with a flowchart and explain the different phases.

• Explain the format, operation, and examples of Register-reference instructions.

• Explain the format and execution of Memory-reference instructions with examples.

• Write detailed notes on Input–Output operations and interrupts with suitable diagrams.

• Describe the basic computer organization and design with neat diagrams.

• Compare and contrast Register-reference, Memory-reference, and I/O instructions with examples.

UNIT-II CPU and Micro Programmed Control.

5 Marks Questions

• Define the role of the CPU in a computer system.

• List the different instruction formats and briefly explain any one.

• Explain any two addressing modes with examples.

• Write short notes on Control Memory.

• Differentiate between hardwired control unit and microprogrammed control unit.

• What is address sequencing in control memory?

• Write the advantages of microprogrammed control.

• Explain the need for instruction formats in CPU design.

• What is the difference between direct and indirect addressing modes?

• Explain the concept of micro-operations in control design.

10 Marks Questions

• Explain the architecture and basic functions of the CPU with a neat diagram.

• Describe different instruction formats with suitable examples.

• Discuss various addressing modes in detail with examples.

• Explain the concept of Control Memory and its role in CPU organization.

• Write short notes on Address Sequencing with a neat diagram.

• Explain the design of a Hardwired Control Unit with an example.

• Describe the design of a Microprogrammed Control Unit with a diagram.

• Compare Hardwired Control and Microprogrammed Control in terms of speed, cost, and flexibility.

• Explain in detail the working of microinstructions in control memory.

• Write detailed notes on the difference between instruction format and addressing modes with examples

UNIT-III Memory Organization.

5 Marks Questions

• What is memory hierarchy? List its levels.

• Differentiate between main memory and auxiliary memory.

• Write short notes on associative memory.

• Explain the concept of cache memory.

• List different cache mapping techniques.

• What are the advantages of using cache memory?

• Define auxiliary memory and give two examples.

• Compare static RAM (SRAM) and dynamic RAM (DRAM).

• Write a short note on hit ratio in cache performance.

• Explain the need for associative memory in computer systems.

10 Marks Questions

• Explain the memory hierarchy in detail with a neat diagram.

• Describe the organization and characteristics of main memory.

• Discuss different types of auxiliary memory and their applications.

• Explain associative memory with block diagram and working.

• Describe the design and operation of cache memory in detail.

• Compare different cache mapping techniques: direct, associative, and set-associative.

• Explain how cache performance is measured using hit ratio and access time.

• Write detailed notes on the role of memory hierarchy in improving system performance.

• Differentiate between main memory, cache memory, and auxiliary memory with examples.

• Explain address mapping in cache memory with neat illustrations.

UNIT-IV Input–Output Organization.

5 Marks Questions

• Define peripheral devices and give two examples.

• What is an I/O interface?

• Explain asynchronous data transfer in brief.

• List different modes of data transfer.

• What is programmed I/O? State its disadvantage.

• Define priority interrupt and give one example.

• Write a short note on Direct Memory Access (DMA).

• What is an Input–Output Processor (IOP)?

• Differentiate between synchronous and asynchronous data transfer.

• Mention the difference between memory-mapped I/O and isolated I/O.

10 Marks Questions

• Explain different types of peripheral devices with suitable examples.

• Describe the structure and working of an input–output interface.

• Explain in detail the concept of asynchronous data transfer with diagrams.

• Discuss various modes of transfer – programmed I/O, interrupt-driven I/O, and DMA.

• Explain the working of a priority interrupt system with neat diagrams.

• Describe the working of Direct Memory Access (DMA) in detail.

• Compare programmed I/O, interrupt-driven I/O, and DMA with advantages and disadvantages.

• Explain the design and functions of an Input–Output Processor (IOP) with a diagram.

• Write short notes on:
  a) Programmed I/O
  b) Priority interrupt
  c) DMA

• Explain the need for I/O organization and its role in computer performance.

UNIT-V Computer Arithmetic and Parallel Processing.

5 Marks Questions

• Differentiate between fixed-point and floating-point representation.

• Write short notes on floating-point representation.

• Explain the addition of two signed numbers using fixed-point arithmetic.

• List the steps in the binary multiplication algorithm.

• Write a short note on binary division algorithm.

• Define parallel processing and give two advantages.

• What is pipelining in computer architecture?

• Differentiate between arithmetic pipeline and instruction pipeline.

• Write short notes on instruction pipeline hazards.

• Explain briefly the role of parallel processing in modern computers.

10 Marks Questions

• Explain fixed-point and floating-point representation with suitable examples.

• Discuss the algorithms for binary addition and subtraction of signed numbers.

• Explain the steps of binary multiplication algorithm with an example.

• Describe the binary division algorithm with an example.

• Explain in detail the need for parallel processing with applications.

• Describe the concept of pipelining and explain its advantages and limitations.

• Explain the design and working of an arithmetic pipeline with a diagram.

• Explain the structure and operation of an instruction pipeline with a neat diagram.

• Compare parallel processing vs pipelining with examples.

• Write detailed notes on the importance of pipelining in CPU performance.