Memory Units

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Memory Units
Memory is one of the most important components of a computer system as it stores data and instructions. Every memory chip contains thousands of memory locations. In the computer, the data is stored in the form of bits and bytes. A bit is the smallest storage unit of memory. A nibble is a collection of 4 bits. Eight bits combined together to form a single byte, which in turn represents a single character. The following table shows various units of computer memory.

Memory Unit
Relation with preceding Memory Unit
Equivalent bytes
Kilobyte (KB)
1 KB = 1024 Bytes (210 Bytes)
1024
Megabyte (MB)
1 MB =1024 KB (210 KB)
1024*1024
Gigabyte (GB)
1 GB =1024 MB (210 MB)
1024*1024*1024
Terabyte (TB)
1 TB = 1024 GB (210 GB)
1024*1024*1024*1024
Petabyte (PB)
1 PB = 1024 TB (210  TB)
1024*1024*1024*1024*1024
Exabyte (EB)
1 EB = 1024 PB (210 PB)
1024*1024*1024*1024*1024*1024
Zetabyte (ZB)
I ZB = 1024 EB (210 EB)
1024*1024*1024*1024*1024*1024*1024
Yottabyte (YB)
1 YB = 1024 ZB (210 ZB)
1024*1024*1024*1024*1024*1024*1024*1024

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