RAM vs ROM | Computer Notes

RAM and ROM

RAM:

•  It stands for Random Access Memory.
•  Data can Read/Write randomly.
•  RAM is used for storage of active programs and data.
•  It is a temporary memory.
•  It is also called Volatile memory (it will lose all stored data if power is turned off).
•  It increases the processing speed of a computer.
•  Also known as Primary memory.
•  Hold instructions or data.
•  RAM is available in different sizes.
• 32 MB, 64 MB, 128 MB, 256 MB (etc)
•  Two types are
• i. Static RAM
• ii. Dynamic RAM

ROM:

•  It Stands for Read Only Memory.
•  Holds data or instructions permanently so it is also called permanent memory.
•  Data can only Read.
•  It is also called Non-Volatile memory (it will not lose stored data if power is turned off).
•  User can’t change it directly.
•  Instructions are stored on it during manufacturing.
•  Types are
• PROM (Programmable Read Only Memory)
• EPROM (Erasable Programmable Read Only Memory)
• Examples: BIOS (Basic Input/Output System)