do number four always be write as IIII instead of IV in roman clocks

No, this is incorrect. In Roman numerals, the number four is always written as "IV" and not "IIII". This is based on the standard rules and principles of Roman numerals:

1. Subtractive Principle: Roman numerals use a combination of addition and subtraction to represent numbers. When a smaller numeral appears before a larger one, it is subtracted from the larger numeral. So "IV" represents 4 (5 - 1).

2. Standard Representation: "IV" is the universally accepted and standardized representation of the number four in Roman numerals, used in various contexts including clocks.

3. Clarity and Consistency: Using "IV" ensures clarity and consistency, making it easier for people to read and understand the numbers.

4. Historical Precedent: The use of "IV" for the number four has been followed for centuries in various contexts, including clocks, calendars, and other timekeeping devices.

5. Cultural Consistency: Using "IV" maintains cultural consistency with the traditional usage of Roman numerals and avoids confusion.

While it's possible that you might see "IIII" used in some very non-traditional or creative contexts, it would not be considered correct or standard in the context of Roman numerals. The proper and expected way to write the number four is "IV".

So, to clarify:

• In traditional Roman numerals, 4 is always written as "IV".
• "IIII" is not a correct representation of 4 in any standard Roman numeral system.

Modern Roman clocks, like other systems using Roman numerals, follow this conventional representation to ensure clarity, consistency, and historical accuracy.