Integer of type int 65535;

The binary system is 16 1, as follows:

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

From the back to the front, the eight bits occupied by the first eight 1 belong to the lower eight bits, and the eight bits occupied by the last eight 1 belong to the upper eight bits.

Single-chip microcomputer uses 4-digit hexadecimal, such as A8E6H.

The corresponding binary values of 16 are 10 10, 1000,1/kloc-0, 0/kloc-0.

Obviously, the upper 8-bit binary value is 10 10, 1000B.

The low-order 8-bit binary value is110,01/0b.

The hexadecimal numbers reduced to two digits are:

The upper 8-bit binary value is A8H.

The low 8-bit binary value is E6H.