KwickClips Computer Systems · 48 sec · free
Why was the unsaved essay lost?
Short answer. RAM is volatile.
Which one is used for cache?
SRAM.
RAM is volatile
| Feature | SRAM | DRAM |
|---|---|---|
| Refresh? | No | Yes |
| Speed | Faster | Slower |
| Cost | Higher | Lower |
| Used for | Cache | Main memory |
Remember
| RAM is volatile |
| SRAM: fast cache |
| DRAM: refreshed main memory |
Power cut, essay gone. Why? RAM loses data without power. SRAM needs no refresh. So it is faster. It costs more. SRAM is cache, DRAM is main memory. Remember. RAM is volatile. SRAM is fast cache. DRAM is refreshed main memory.
This clip is from the full lesson: Primary Memory: RAM, ROM and Cache — 8 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 9 Computer Applications (165), CBSE Class 9 Computer Applications (165), CBSE Class 10 Information Technology (402), CBSE Class 11 Computer Science (083)
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Which memory keeps data with the power off?44 sec
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