1. Computer memory: GB is a unit, G is not a unit, but now everyone refers to GB directly as G, so G is equivalent to GB. Therefore there is no difference between GB and G. 1TB=1024GB, 1GB=1024MB.
Gigabyte (GB, Gigabyte, also known as Jigabyte or Jingbyte or gigabyte or halberd in China), often abbreviated as G, is a decimal unit of information measurement . Gigabyte is often confused with Gibibyte, the binary unit of information measurement. It is often used to indicate the storage capacity of storage media with larger capacity such as hard drives and memories.
2. Various national standards: GB is the pinyin of the national standard, or it is called Chinese standard.
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