Sr # |
RAM |
ROM |
1 |
RAM stands for Random Access Memory |
ROM stands for Read Only Memory. |
2 |
RAM is a temporary memory. |
ROM is a permanent memory. |
3 |
RAM is a volatile memory. |
ROM is a non volatile memory. |
4 |
When computer is turned off, all data and programs are erased from RAM. |
When computer is turned off, all data and programs are retained in ROM. |
5 |
RAM is a Read / Write memory. Data can be read and written to RAM. |
ROM is a read only memory. Data from ROM only can be read and not written. |
6 |
Data and programs in RAM can be changed. |
The contents of ROM cannot be changed. |
7 |
Data or programs in RAM can be deleted. |
Contents of ROM cannot be deleted. |
8 |
The instructions and data are written (loaded) in RAM at execution time, when computer is working. |
The instructions in ROM are written at the time of manufacturing. |
9 |
RAM is used to load data and programs currently running. |
ROM contains the instructions that help the computer to start-up and make it ready for work. |
10 |
RAM is much faster than ROM. |
ROM is slower than RAM. |
11 |
RAM has two main types: Static RAM and Dynamic RAM |
ROM has three types: PROM, EPROM and EEPROM |
12 |
Physically RAM chip is larger than ROM chip. |
Physically ROM chip is smaller than RAM chip. |
13 |
Picture of RAM is:
 |
RAM |
|
Picture of ROM is:
 |
ROM |
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