# What is digit?

## What Does digit Mean

The term digit derives from digĭtus , a Latin word that can be translated as “finger” . In the field of mathematics , the number that is expressed through a single figure is called a digit (the figures are the figures or signs that serve to express a quantity). This means that, in decimal numbering , the digit numbers are ten: 0 , 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 and 9 .

As there are ten digits in this numbering system , we can understand the reason for the etymological root: each digit can correspond to a finger . We have ten fingers on our hands and there are ten digits in decimal numbering.

Digit, in this framework, is usually used as a synonym for cipher (the sign that allows the representation of a digit number). A digit number or a one-digit number, therefore, is expressed with a single figure.
The result of the addition 4 + 3 , to cite a case, is a digit number: 7 . Instead, the sum 8 + 5 results in a two-digit number ( 13 ). As you can see, 13 is made up of the digit 1 and the digit 3 . Since the numbers are infinite, the number of digits is also infinite. There are numbers of one digit, of two, of eight, of forty-five, of nine hundred and fifty-two, etc.
It is important to note that there are other systems beyond the decimal. A binary numbering system , for example, appeals to two decimal digits ( 0 and 1 ). One digit in this system is known as a bit . In the field of computing, in fact, data is stored as bits, making use of different combinations of 0 and 1 .
The reading of numbers is taught at a basic level during the years of compulsory education, so that all citizens who have accessed school can understand and use numbers in the official system, which is the decimal . Thanks to this, we can read the prices of the products and services we need to live in society, solve simple calculations to organize our money and our time, and follow a culinary recipe using the correct amounts of each ingredient.
However, the math doesn't end there. The reading of the numbers entails a certain difficulty when we enter the set of decimal numbers or other numbering systems, such as binary or hexadecimal, since in those cases the interpretation of the same figure can vary and this can give lead to endless mistakes and complications.

Let's see some examples to understand more clearly what is stated in the previous paragraph. If we are faced with the number digit 1 , we can ensure that both in the decimal, binary and hexadecimal numbering system the reading is the same: "one". Now, if we just add a number and turn it into 10 , everything changes considerably: while in decimal system we must read this number as "ten", in binary it is "two" and in hexadecimal, "sixteen". If we wanted to express the quantity of ten in these last two systems, we would write 1010 and A , respectively, something that people outside the exact sciences do not usually know.
We can find this term as part of a compound in acupressure , for example, a therapeutic procedure that fuses the fundamentals of acupuncture and massage without the need to use external elements, such as needles. Broadly speaking, it consists of pressing certain points of the body to promote its recovery. According to experts, our body has a network of energy channels that relates all internal organs; by touching the external sites corresponding to each of them it is possible to treat them.

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