Introduction to Computer Organization and
Architecture (COA)
Introduction to Computer Organization and
Architecture
Central Processing Unit (CPU) and its
Components
The CPU is the primary component of a computer
system that performs most of the processing inside
the computer.
It is also known as the "brain" of the computer.
The CPU is composed of three main components:
1. Arithmetic Logic Unit (ALU)
2. Control Unit (CU)
3. Registers
Basic Concepts and Classifications
Computer organization refers to the structure and
interconnection of the hardware components in a
computer system.
Computer architecture refers to the design and
implementation of the instruction set, data encoding,
and addressing modes of a computer system.
Two main classifications of computer systems:
1. Von Neumann architecture
2. Harvard architecture
Memory Interfacing and Hierarchy
Memory is the storage area of a computer system.
Memory interfacing refers to the connection between
the CPU and memory.
, Memory hierarchy refers to the different types of
memory in a computer system and how they are
organized in terms of speed and cost.
The memory hierarchy includes:
1. Registers
2. Cache memory
3. Primary memory (RAM)
4. Secondary memory (hard disk, SSD)
Data Transmission Techniques
Data transmission refers to the movement of data
between different components of a computer system.
Common data transmission techniques include:
1. Parallel transmission
2. Serial transmission
3. Synchronous and asynchronous transmission
Machine Instructions and Addressing
Modes
Machine instructions are the lowest level of
programming languages and are executed directly by
the CPU.
Addressing modes specify how the CPU accesses and
manipulates data.
Common addressing modes include:
1. Immediate addressing
2. Direct addressing
3. Indirect addressing
4. Register addressing
5. Indexed addressing
Architecture (COA)
Introduction to Computer Organization and
Architecture
Central Processing Unit (CPU) and its
Components
The CPU is the primary component of a computer
system that performs most of the processing inside
the computer.
It is also known as the "brain" of the computer.
The CPU is composed of three main components:
1. Arithmetic Logic Unit (ALU)
2. Control Unit (CU)
3. Registers
Basic Concepts and Classifications
Computer organization refers to the structure and
interconnection of the hardware components in a
computer system.
Computer architecture refers to the design and
implementation of the instruction set, data encoding,
and addressing modes of a computer system.
Two main classifications of computer systems:
1. Von Neumann architecture
2. Harvard architecture
Memory Interfacing and Hierarchy
Memory is the storage area of a computer system.
Memory interfacing refers to the connection between
the CPU and memory.
, Memory hierarchy refers to the different types of
memory in a computer system and how they are
organized in terms of speed and cost.
The memory hierarchy includes:
1. Registers
2. Cache memory
3. Primary memory (RAM)
4. Secondary memory (hard disk, SSD)
Data Transmission Techniques
Data transmission refers to the movement of data
between different components of a computer system.
Common data transmission techniques include:
1. Parallel transmission
2. Serial transmission
3. Synchronous and asynchronous transmission
Machine Instructions and Addressing
Modes
Machine instructions are the lowest level of
programming languages and are executed directly by
the CPU.
Addressing modes specify how the CPU accesses and
manipulates data.
Common addressing modes include:
1. Immediate addressing
2. Direct addressing
3. Indirect addressing
4. Register addressing
5. Indexed addressing
