Podcast
Questions and Answers
What is the main characteristic of ECC RAM?
What is the main characteristic of ECC RAM?
Which type of ROM can be erased and reprogrammed electrically?
Which type of ROM can be erased and reprogrammed electrically?
What is the largest and slowest memory type in the memory hierarchy?
What is the largest and slowest memory type in the memory hierarchy?
What happens when the CPU finds the required data in the cache?
What happens when the CPU finds the required data in the cache?
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Which type of RAM is used in laptops?
Which type of RAM is used in laptops?
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What is the strategy used to decide which cache line to replace when the cache is full?
What is the strategy used to decide which cache line to replace when the cache is full?
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Study Notes
Computer Memory
Types of RAM
- SRAM (Static RAM): Fast, expensive, and volatile (loses data when power is turned off).
- DRAM (Dynamic RAM): Slower, cheaper, and volatile (loses data when power is turned off).
- ECC RAM (Error-Correcting Code RAM): A type of RAM that includes an extra chip to detect and correct data errors.
- SO-DIMM (Small Outline Dual In-Line Memory Module): A type of RAM used in laptops.
ROM Types
- PROM (Programmable ROM): Can be programmed once by the user.
- EPROM (Erasable Programmable ROM): Can be erased and reprogrammed multiple times.
- EEPROM (Electrically Erasable Programmable ROM): Can be erased and reprogrammed electrically.
- Flash ROM: A type of EEPROM that can be erased and reprogrammed in blocks.
Memory Hierarchy
- Level 1 Cache (L1 Cache): Smallest and fastest cache, built into the CPU.
- Level 2 Cache (L2 Cache): Larger and slower than L1 cache, but still relatively fast.
- Main Memory (RAM): The largest and slowest memory type.
- Secondary Storage (Hard Disk): The slowest and largest storage type.
Cache Memory
- Cache Hit: When the CPU finds the required data in the cache.
- Cache Miss: When the CPU does not find the required data in the cache.
- Cache Line: The unit of data transferred between the cache and main memory.
- Cache Replacement Policy: The strategy used to decide which cache line to replace when the cache is full.
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Description
Learn about the different types of RAM, ROM, and cache memory, including their characteristics and uses. Understand the memory hierarchy and how it affects computer performance. Test your knowledge of computer memory concepts!
