JNTUK B.Tech 2-1(R23) Digital logic and Computer Organization Important Questions are now available. By reading these questions you can get good marks in your exam. Here you can get all jntu materials, syllabus, previous year papers, e-books, important questions.
UNIT-I
2-Mark Questions
- Define binary numbers and explain their significance in digital systems.
- What is fixed-point representation? Provide a brief example.
- Explain the concept of floating-point representation and its components.
- What are the basic logic gates? List them with their symbols.
- Define a truth table and its purpose in digital logic design.
- What is a universal gate? Provide examples of universal gates.
- Explain the process of number base conversion with a simple example.
- What is a K-map (Karnaugh map) and its purpose in simplifying logic expressions?
- Define a combinational circuit and provide an example.
- What is a decoder, and how does it function in digital circuits?
10-Mark Questions
- Discuss the different number systems used in digital logic (binary, octal, decimal, hexadecimal). Provide examples of conversions between these systems.
- Explain the process of designing a combinational circuit using basic logic gates. Provide a detailed example of a specific combinational circuit design.
- Describe the process of minimizing logic expressions using Karnaugh maps. Provide a step-by-step example to illustrate the minimization process.
- Discuss the various types of flip-flops (SR, JK, D, T) and their applications in sequential circuits. Provide truth tables and characteristic equations for each type.
- Explain the concept of binary arithmetic (addition and subtraction) in digital systems. Provide examples of binary addition and subtraction, including handling of carry and borrow.
UNIT-II
2-Mark Questions
- Define a sequential circuit and explain how it differs from a combinational circuit.
- What is a flip-flop? Briefly describe its function in digital circuits.
- Explain the operation of a binary counter and provide an example.
- What is a register in digital systems? Describe its purpose.
- Define the term "bus" in the context of computer architecture.
- What is the difference between synchronous and asynchronous counters?
- Explain the concept of a shift register and its applications.
- What is the function of a multiplexer (MUX)? Provide a simple example.
- Define the term "memory hierarchy" in computer organization.
- What is the purpose of an arithmetic logic unit (ALU) in a computer system?
10-Mark Questions
- Discuss the design and operation of different types of sequential circuits, including counters and registers. Provide examples of each type and their applications.
- Explain the concept of a synchronous counter. Describe the design of a 4-bit synchronous binary counter, including its state diagram and truth table.
- Describe the architecture of a basic computer system, including the CPU, memory, and I/O devices. Explain the role of each component in the system.
- Discuss the various types of memory (RAM, ROM, Cache) and their characteristics. Explain how they are used in a computer system.
- Explain the operation of a multiplexer and a demultiplexer. Provide examples of their applications in digital circuits and how they can be used to implement logic functions.
UNIT-III
2-Mark Questions
- Define signed and unsigned numbers in the context of binary arithmetic.
- What is the purpose of a fast adder in computer arithmetic?
- Explain the concept of two's complement and its significance in binary subtraction.
- What is the difference between fixed-point and floating-point representation?
- Describe the process of binary multiplication using the shift-and-add method.
- What is a floating-point number? Briefly explain its components.
- Define the term "overflow" in binary arithmetic.
- What is the role of the control unit in a processor?
- Explain the concept of instruction execution in a CPU.
- What is the purpose of a bus in a computer system?
10-Mark Questions
- Discuss the various methods of binary addition and subtraction, including the half adder and full adder designs. Provide truth tables and circuit diagrams for each.
- Explain the process of binary multiplication in detail, including both the shift-and-add method and the array multiplier. Provide examples to illustrate each method.
- Describe the architecture of a basic CPU, including its main components (ALU, control unit, registers) and their functions. Explain how these components interact during instruction execution.
- Discuss the design and operation of different types of adders (ripple carry adder, carry look-ahead adder). Compare their performance in terms of speed and complexity.
- Explain the concept of floating-point arithmetic, including the IEEE 754 standard. Discuss how floating-point numbers are represented and the challenges associated with floating-point calculations.
UNIT-IV
2-Mark Questions
- Define semiconductor RAM and explain its basic characteristics.
- What is the difference between volatile and non-volatile memory?
- Explain the concept of cache memory and its purpose in a computer system.
- What is virtual memory, and why is it used in modern operating systems?
- Describe the role of memory management in a computer system.
- What is the function of Read-Only Memory (ROM)?
- Define the term "memory hierarchy" and list its levels.
- What is the purpose of a memory address in a computer system?
- Explain the concept of paging in memory management.
- What is a memory bus, and how does it function in data transfer?
10-Mark Questions
- Discuss the different types of memory (RAM, ROM, Cache) in detail, including their characteristics, uses, and performance implications. Provide examples of each type.
- Explain the concept of cache memory, including its types (L1, L2, L3) and how it improves system performance. Discuss cache mapping techniques such as direct-mapped, fully associative, and set-associative mapping.
- Describe the organization of virtual memory, including the concepts of page tables and segmentation. Explain how virtual memory allows for efficient use of physical memory.
- Discuss the principles of memory management in operating systems, including allocation strategies (contiguous, paging, segmentation) and their advantages and disadvantages.
- Explain the concept of secondary storage and its role in a computer system. Discuss different types of secondary storage devices (HDD, SSD) and their characteristics.
UNIT-V
2-Mark Questions
- Define the term "I/O organization" in the context of computer architecture.
- What is the purpose of an interrupt in a computer system?
- Explain the difference between polling and interrupt-driven I/O.
- What is Direct Memory Access (DMA), and how does it work?
- Describe the function of an I/O controller.
- What is the role of buses in I/O organization?
- Define the term "interface circuit" and its importance in I/O operations.
- What are standard I/O interfaces? Provide examples.
- Explain the concept of buffering in I/O operations.
- What is the significance of device drivers in a computer system?
10-Mark Questions
- Discuss the different methods of I/O data transfer, including programmed I/O, interrupt-driven I/O, and Direct Memory Access (DMA). Compare their advantages and disadvantages.
- Explain the architecture of a typical I/O system, including the roles of the CPU, I/O devices, and I/O controllers. Discuss how they interact during data transfer.
- Describe the process of handling interrupts in a computer system. Explain the types of interrupts and how they affect CPU operation.
- Discuss the various types of buses used in computer systems (data bus, address bus, control bus) and their roles in I/O organization. Explain how bus arbitration works.
- Explain the concept of standard I/O interfaces, such as USB, PCI, and SATA. Discuss their characteristics and how they facilitate communication between the CPU and peripheral devices.