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Compare Ram and ROM
written 2.8 years ago by
hetalgosavi
♦ 760
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• modified 2.6 years ago |
Subject :- VLSI Design
Topic :- Semiconductor Memories
Difficulty :- High
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written 2.6 years ago by
hetalgosavi
♦ 760
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| Basis of Comparison | RAM | ROM |
|---|---|---|
| Basic | It is a read-write memory. | It is read only memory. |
| Definition | Random Access Memory or RAM is a form of data storage that can be accessed randomly at any time, in any order and from any physical location, allowing quick access and manipulation. | Read-only memory or ROM is also a form of data storage that cannot be easily altered or reprogrammed. It stores instructions that are not necessary for re-booting up to make the computer operate when it is switched off. They are hardwired. |
| Use | Used to store the data that has to be currently processed by CPU temporarily. | It stores the instructions required during bootstrap of the computer. |
| Volatility | RAM is a type of volatile memory, meaning the stored data is lost when powering off. | ROM is a type of non-volatile memory, meaning that the data will not be lost when power is removed. |
| Stands for | Random Access Memory | Read Only Memory |
| Modification | Data in ROM can be modified. | Data in ROM cannot be modified. |
| Storage | Temporary storage. | Permanent storage. |
| Capacity | RAM sizes from 64 MB to 4GB. | ROM is comparatively smaller than RAM. |
| Cost | RAM is costlier memory. | ROM is comparatively cheaper than RAM |
| Type | Types of RAM are Static RAM and dynamic RAM. | Types of ROM are PROM, EPROM and EEPROM. |
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