Basic Computer Organization and Design

Understanding BCA Syllabus Avadh University – Semester I Paper BCA102 T Unit III

by

Semester I BCA Syllabus BCA102 T – Computer System Architecture

Semester I Paper BCA101 T Unit III – Basic Computer Organization and Design

In Unit III, we will learn about Basic Computer Organization and Design. In this Unit, we’ll explore the key components that make up a computer system and how they work together to execute instructions and process data. By the end of this module, you’ll have a solid foundation in computer architecture.

We will cover the following topics:

  1. Computer registers,
  2. Bus System,
  3. Instruction Set,
  4. Timing and Control,
  5. Instruction Cycle,
  6. Memory Reference,
  7. Input-Output and interrupt,
  8. Interconnection Structures,
  9. Bus Interconnection Design of Basic Computer.

1. Computer Registers:

  • Registers are high-speed storage elements within the CPU.
  • Examples: Accumulator, Program Counter (PC), Instruction Register (IR).

2. Bus System:

  • The bus system connects various components of the computer.
  • Types: Data Bus, Address Bus, Control Bus.

Example:

  • Data Bus: Carries data between CPU and memory.

3. Instruction Set:

  • The set of instructions the CPU can execute.
  • Examples: Load, Store, Add, Subtract, Jump.

4. Timing and Control:

  • Timing signals coordinate activities within the CPU.
  • The control unit interprets and executes instructions.

5. Instruction Cycle:

  • The process of fetching, decoding, and executing an instruction.

Example:

  • Load instruction: Fetch the data, decode the operation, and load it into a register.

6. Memory Reference:

  • How the CPU reads/writes data from/to memory.

Example:

  • Load instruction: Read data from memory into a register.

7. Input-Output and Interrupt:

  • Managing input and output devices.
  • Handling interrupts for external events.

Example:

  • Keyboard input, printing to a screen.

8. Interconnection Structures:

  • How components are connected within a computer.
  • Types: Buses, Crossbar switches, Multistage networks.

9. Bus Interconnection Design of a Basic Computer:

  • Discuss the design of a simple computer with bus interconnections.

Example Code:

MOV A, 5 // Load value 5 into register A
ADD B, A // Add A to B and store the result in B
SUB C, B // Subtract B from C and store the result in C

In Unit III, we have covered the foundational aspects of Basic Computer Organization and Design. Understanding these concepts is crucial for anyone interested in computer science and architecture. In future modules, we’ll explore more advanced topics and practical applications of computer organization.

Keep exploring and building your knowledge in this exciting field!

Leave a Comment