Base 2 system (Binary)Base 3 systemThere are too many numeration systems to name.
Babilonian, Mayan, Roman, and Egypcian
They were called metrological numeration systems.
Learning early numeration systems gives you an historic insight into how numeracy has evolved and developed over many thousands of years ago to what it is today. Also it enables you to become more confident when dealing with other branches of mathematics such as algebra because these early numeration systems used symbols or letters (like Roman numerals) instead of the numbers we use today.
The oldest records of ancient Egyptian number systems (there were many) that we have are carved on monuments in hieroglyphics that were deciphered in the 19th century.
There are 10 symbols in the system and they are... 1, 2, 3, 4, 5, 6, 7, 8, 9 and 0.
It was the use of 0, particlarly as a place holder.
John Wahl has written: 'I can count the petals of a flower' -- subject(s): Flowers, Juvenile literature, Pictorial works, Number systems, Counting books, Numeration
Digit refers to one of the elements that jointly forms a system of numeration. It may also refer to any symbol of other number systems or the breadth of a finger used as a unit of linear measure. :D
Both systems of numeration had no 0 and they both used combinations of base numbers (1, 10, and 60 for the Babylonians; 1, 5, 10, 20, and 100 for the Phoenicians) to represent other numbers.
Without a system of numeration it would be impossible to count things. The Roman system was by no means the best, but their empire was extensive thus it became the dominant numeric form throughout most of Europe. Fortunately, the Hindu-Arabic numeral system was developing in India during the same period and, due to its base-10, positional nature, it gradually replaced the Roman system until it became the dominant form in the 16th century. There were other systems, including those that pre-dated the Roman method, however none could compete with Hindu-Arabic in terms of both notation and in computation.