Question

1. What makes SRAM access time less DRAM? 2. What principles that make the cache improve the performance of the computer? 3. Why the DRAM needs frequent charging? 4. What are the principles that make associative mapping (cache to memory) better than direct mapping? 5. What is the difference between direct and random access (to memory)? 6. Why do we need nonvolatile storage devices? 7. In general, what are the strategies for exploiting spatial locality and temporal locality? 8. A set-associative cache consists of 64 lines, or slots, divided into four-line sets. Main memory contains 4K blocks of 128 words each. Show the format of main memory addresses.

Answer 1

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1. Answer)
DRAM is the type of RAM that stores data bits inside the IC 's separate capacitor and needs regular refreshing. For DRAM to work, the memory controller recharges the capacitors constantly which are filled with electrons to maintain the data. The memory controller reads and writes the data using this process and thus is known as refreshing the data. Since there is a need to refresh the data constantly thereby DRAM is slower.
SRAM uses flip flops and transistors and does not need refreshing which is why the SRAM is faster than the DRAM and thus SRAM is more expensive also.

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