1KB=1024B；
1MB=1024KB=1024×1024B。
1B (byte, byte bai) = 8 bit (see below);
1KB (Kilobyte, kilobytes)=1024B= 2^10 B;
1MB (Megabyte, megabytes, du megabytes, abbreviated as "Megabyte") = 1024KB = 2^20 B;
1GB (Gigabyte, gigabyte, one billion bytes, also known as "gigabyte") = 1024MB = 2^30 B;
1TB (Terabyte, trillion bytes, terabytes) = 1024GB = 2^40 B;
Extended information:
concerned department:
1. B and bit:
Data storage is based on "byte" (Byte), data transmission is mostly based on "bit" (also known as "bit") as the unit, a bit represents a 0 or 1 (that is, binary), every 8 Bit (bit, abbreviated as b) forms a byte (Byte, abbreviated as B), which is the smallest unit of information.
2 、 B 与 iB ：
1KiB （Kibibyte） = 1024byte
1KB（Kilobyte）=1000byte
1MiB（Mebibyte）=1048576byte
1MB（Megabyte）=1000000byte
type of data:
Byte data type (byte type) is stored in one byte (Byte), which can distinguish 256 numbers, and the value range: 0 to 255. Byte is an unsigned type from 0-255, so it cannot represent negative numbers.