Byte

1 Byte is 8 Bits, it is enough to represent one character in an alphabet as long as it is our western latin sense of writing. asian characters need 2 Bytes (unicode).

1 KByte (Kilo Byte) is 1024 Bytes 1 MByte (Mega Byte) is 1024 KB (Kile Byte) 1 GByte (Giga Byte) is 1024 MB (Mega Byte) 1 TByte (Tera Byte) is 1024 GB (Giga Byte) etc.