Podcast
Questions and Answers
What is the primary purpose of Cache Memory in a computer system?
What is the primary purpose of Cache Memory in a computer system?
What is the main difference between Static RAM (SRAM) and Dynamic RAM (DRAM)?
What is the main difference between Static RAM (SRAM) and Dynamic RAM (DRAM)?
What is the function of Virtual Memory in a computer system?
What is the function of Virtual Memory in a computer system?
In the Memory Hierarchy, what is the fastest level of memory?
In the Memory Hierarchy, what is the fastest level of memory?
Signup and view all the answers
What occurs when the CPU requests a page not in physical RAM in a Virtual Memory system?
What occurs when the CPU requests a page not in physical RAM in a Virtual Memory system?
Signup and view all the answers
Study Notes
Computer Memory
RAM (Random Access Memory)
- Volatile memory technology, meaning contents are lost when power is turned off
- Temporary storage for data and program instructions currently being used by CPU
- Data can be read and written quickly
- Capacity measured in bytes (KB, MB, GB, etc.)
- Divided into:
- Static RAM (SRAM): faster, more expensive, and less dense
- Dynamic RAM (DRAM): slower, less expensive, and more dense
ROM (Read-Only Memory)
- Non-volatile memory technology, retaining data even when power is off
- Permanent storage for data and program instructions
- Data can only be written once during manufacturing, then becomes read-only
- Used for firmware, bootloaders, and other persistent data
Cache Memory
- Small, fast, and expensive memory built into CPU
- Acts as buffer between main memory and CPU, reducing access time
- Divided into levels (L1, L2, L3, etc.), each with decreasing size and access time
- Optimizes performance by storing frequently accessed data
Memory Hierarchy
- Organization of memory systems in a computer, from fastest to slowest:
- Registers (inside CPU)
- Cache
- Main Memory (RAM)
- Secondary Storage (hard drives, SSDs, etc.)
- Tertiary Storage (tapes, optical discs, etc.)
- Each level acts as a cache for the next, reducing access time and improving performance
Virtual Memory
- Combination of physical RAM and secondary storage (hard drive) to provide more memory
- Operating system manages virtual memory, swapping pages of memory to and from disk as needed
- Provides larger address space than physical RAM, allowing for more programs to run
- Page Fault occurs when CPU requests a page not in physical RAM, causing a delay while the page is retrieved from disk
Computer Memory
RAM (Random Access Memory)
- Volatile, meaning data is lost when power is turned off
- Temporary storage for data and program instructions currently used by CPU
- Data can be read and written quickly
- Capacity measured in bytes (KB, MB, GB, etc.)
- Divided into two types:
- Static RAM (SRAM): faster, more expensive, and less dense
- Dynamic RAM (DRAM): slower, less expensive, and more dense
ROM (Read-Only Memory)
- Non-volatile, retaining data even when power is off
- Permanent storage for data and program instructions
- Data can only be written once during manufacturing, then becomes read-only
- Used for firmware, bootloaders, and other persistent data
Cache Memory
- Small, fast, and expensive memory built into CPU
- Acts as a buffer between main memory and CPU, reducing access time
- Divided into levels (L1, L2, L3, etc.), each with decreasing size and access time
- Optimizes performance by storing frequently accessed data
Memory Hierarchy
- Organization of memory systems in a computer, from fastest to slowest:
- Registers (inside CPU)
- Cache
- Main Memory (RAM)
- Secondary Storage (hard drives, SSDs, etc.)
- Tertiary Storage (tapes, optical discs, etc.)
- Each level acts as a cache for the next, reducing access time and improving performance
Virtual Memory
- Combination of physical RAM and secondary storage (hard drive) to provide more memory
- Operating system manages virtual memory, swapping pages of memory to and from disk as needed
- Provides larger address space than physical RAM, allowing for more programs to run
- Page Fault occurs when CPU requests a page not in physical RAM, causing a delay while the page is retrieved from disk
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Learn about the basics of computer memory, including RAM and ROM, and their characteristics.