Difference between RAM and ROM,Static RAM vs Dynamic RAM
This page covers difference between RAM and ROM.It also covers difference between static RAM and Dynamic RAM.
The memories are of two types. These include primary memories and secondary memories. RAM and ROM are types of primary memory. Semi random and serial access are types of secondary memory.
Examples of semi random memories include all disc memories such as CDs, DVDs etc. Examples of serial access memories include magnetic tape, magnetic bubble ferrite core, CCD etc.
| RAM | ROM |
|---|---|
| It is read/write memory | It is read only memory |
| It is volatile memory i.e. used for temporary data storage | It is used for permanent data storage |
| Static RAM | Dynamic RAM |
|---|---|
| Data is stored like flipflop(FF) | Data is stored in MOS capacitor |
| BJT, MOSFET is used | MOSFET is used |
| It is faster in operation | It is slower in operation |
| Power dissipation is more | Power dissipation is low |
| Density is less | Density is higher |
| Used as cache memory | Used as main memory |
| No refreshing is needed | Refreshing is needed |
Also refer MRAM vs SRAM vs DRAM which compares MRAM, SRAM and DRAM and mentions difference between MRAM, SRAM and DRAM types.
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