Post date: Nov 15, 2014 9:35:49 PM
Positional Number System
The decimal system (base 10)
The binary system (base 2)
The hexadecimal system (base 16)
The octal system (base 8)
Comparison of numbers in the four system
Non-Positional Number System
Values of symbols in the Roman number system
Specific rules for Roman number system:
1. When a symbol with a smaller value is placed after a symbol having an equal or larger value, the value are added.
2. When a symbol with a smaller value is placed before a symbol having a larger value, the smaller value is subtracted from the larger one.
3. A symbol S1 cannot come before another symbol S2 if S1<=(10*S2). For example, I or V cannot come before C.
4. For large numbers a bar is placed above any of the six symbols (all symbols except I) to express multiplication by 1000. For example, V=5,000 and M=1,000,000.
5. Although Romans used the word nulla (nothing) to convey the concept of zero, the Roman numerals lack a zero digit in their system.