What can hold the code unit of character?

The code unit of a character can be held in various data types depending on the encoding format. For example, in UTF-8 encoding, a code unit can be stored in a single byte (8 bits), while in UTF-16, it can be stored in a 16-bit unit. In programming languages, this can be represented using data types such as char, byte, or uint16_t, depending on the specific needs and the encoding used.