Какое отличие между порядком байтов в системах big-endian и little-endian?

Big-endian and little-endian are two ways of ordering bytes in multi-byte numbers:

• Big-endian: the most significant byte is stored at the lowest memory address, i.e., first.
• Little-endian: the least significant byte is stored at the lowest memory address.

For example, the number 0x12345678 in memory would look like this:

• Big-endian: 12 34 56 78
• Little-endian: 78 56 34 12

This is important when transferring data between systems with different byte orders or when working with low-level code.