WHAT'S the meaning of Unicode ?? please I want a simple answer

Answer 1

In practice it is a mechanism that converts integers or hexadecimal values into characters. It includes 65536 different characters, maybe more, including latin alphabets, numbers, symbols and thousands characters from different countries.

But you only need to know that:
Uppercase characters start from 65 and ends to 90,
Lowercase characters start from 97 and ends to 122,
Numbers start from 33 and end to 42.
32 is for space.
Escape characters are below 32.

(h is a hexadecimal digit)
"\xhh" gets transformed to a character between 0 and 255.
"\uhhhh" gets transformed to a character between 0 and 65535.
"\Uhhhhhhhh" gets trandormed to a character between 0 and 4294967295.

Answer 2

Seb TheS @4294967295 we need UTF-32, FOR THE EMOJIS! 😂