Memory of a Computer is any physical device that is capable of storing information whether it is large or small and stores it temporarily or permanently.
Memory can be either:
- volatile
- non-volatile.
Volatile memory is a type of memory that loses its contents when the computer or hardware device is switched off. RAM is an example of a volatile memory.
Non-volatile memory is a memory that keeps its contents saved even in the case of power loss. EPROM(Erasable Programmable ROM) is an example of non-volatile memory.
Characteristics of Main Memory/ Primary memory/ RAM
- Semiconductor memories.
- Faster than secondary memories.
- A computer cannot run without the primary memory.
- It is the working memory of the computer.
- Usually volatile memory.
- Data is lost in case power is switched off.
Units of Memory-
- Byte
- Kilo Byte
- Mega Byte
- Giga Byte
- Tera Byte
- Peta Byte
- Exa Byte
- Zetta Byte
- Yotta Byte
A byte is abbreviated with a big “B” whereas a bit is abbreviated with a small “b”.