do all roman clocks still use number four as IIII instead of IV

No, all Roman clocks use the number four as "IV" rather than "IIII" in Roman numerals. The use of "IV" is standard and follows the rules of Roman numerals:

1. Subtractive Principle: In Roman numerals, when a smaller numeral appears before a larger one, it is subtracted. Hence, "IV" represents 4 (5 - 1).

2. Standardization: "IV" is the universally accepted form for the number four and is used consistently across various contexts, including clocks.

3. Readability: Using "IV" makes it clear and easy to read, maintaining consistency with other Roman numerals.

4. Historical Precedence: The use of "IV" for four has been followed for centuries and is based on established conventions.

5. Cultural Consistency: Using "IV" maintains cultural consistency with traditional Roman numeral system.

While theoretically possible in some non-standard or creative contexts, "IIII" is not considered correct or accurate for the number four in Roman numerals. The proper and expected representation is "IV".

So, to reiterate:

• All standard Roman clocks use "IV" for the number four.
• The use of "IIII" is incorrect and not followed in any traditional or modern context using Roman numerals.

The consistent and universal use of "IV" ensures clarity, consistency, and accuracy in representing the number four in Roman numerals.