💾 Computer Memory

 

💾 Computer Memory-Definition and Types

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Definition:

Computer memory is the part of a computer that is used to store data and instructions temporarily or permanently. It allows the CPU to quickly access data needed for processing.

Memory is essential for the smooth operation of any computer system and is generally divided into primary and secondary types.

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🧠 Types of Computer Memory:

1. Primary Memory (Main Memory)

• Directly accessible by the CPU.

• Fast but limited in size.

• Volatile (data is lost when power is off).

Types:

• RAM (Random Access Memory)—Temporarily holds data being used.

• ROM (Read Only Memory)—Stores permanent instructions (e.g., boot process).

2. Secondary Memory (Storage)

• Used for long-term data storage.

• Non-volatile (data is retained after power off).

• Slower than primary memory.

Examples:

• Hard Disk Drives (HDD)

• Solid State Drives (SSD)

• CDs/DVDs

• USB Flash Drives

3. Cache Memory

• Very small, high-speed memory located close to or inside the CPU.

• Stores frequently used instructions/data to speed up processing.

4. Virtual Memory

• A section of a hard drive that is used as if it were RAM when actual RAM is full.

• Slower than real RAM, but helps run large applications.

5. Registers

• Smallest and fastest memory in the CPU.

• Stores data currently being used or processed.

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Would you like a diagram or infographic on computer memory types as well?