Memory Units
The memory unit is the amount of data that can be stored in the storage unit. This storage capacity is expressed in terms of Bytes.
The following table explains the main memory storage units −
|
S.No |
Unit & Description |
|
1 |
Bit (Binary Digit) The computer memory units start from bit. A bit is the smallest memory unit to measure data stored in main memory and storage devices. A bit can have only one binary value out of 0 and 1 |
|
2 |
Nibble A group of 4 bits is called nibble. |
|
3 |
Byte A group of 8 bits is called byte. A byte is the smallest unit, which can represent a data item or a character. |
The following table lists some higher storage units −
|
S.No. |
Unit & Description |
|
1 |
Kilobyte (KB) 1 KB = 1024 Bytes |
|
2 |
Megabyte (MB) 1 MB = 1024 KB |
|
3 |
Gigabyte (GB) 1 GB = 1024 MB |
|
4 |
TeraByte (TB) 1 TB = 1024 GB |
|
5 |
PetaByte (PB) 1 PB = 1024 TB |