Block diagram of a computer

A block diagram of a computer visually represents the key components and their interconnections. Here’s a simple block diagram of a computer system:

        +---------------------+
        |   Input Devices     |
        |  (Keyboard, Mouse)  |
        +---------+-----------+
                  |
                  v
        +---------------------+
        |     Central Processing Unit (CPU)  |
        |  +-----------------------------+  |
        |  |  Control Unit (CU)          |  |
        |  |  Arithmetic Logic Unit (ALU)|  |
        |  |  Registers                  |  |
        |  +-----------------------------+  |
        +---------------------+
                  |
                  v
        +---------------------+
        |      Memory (RAM)   |
        +---------------------+
                  |
                  v
        +---------------------+
        |   Storage Devices   |
        | (HDD, SSD, USB)     |
        +---------------------+
                  |
                  v
        +---------------------+
        |   Output Devices    |
        | (Monitor, Printer)  |
        +---------------------+

Explanation:

1. Input Devices – Used to enter data (e.g., keyboard, mouse).
2. CPU (Central Processing Unit) – The brain of the computer, which includes:
   • Control Unit (CU): Directs operations.
   • Arithmetic Logic Unit (ALU): Performs calculations and logic operations.
   • Registers: Temporary data storage for quick processing.
3. Memory (RAM) – Temporarily holds data for quick access.
4. Storage Devices – Used for long-term data storage (e.g., HDD, SSD).
5. Output Devices – Displays or prints results (e.g., monitor, printer).