Extended ASCII Code Characters
Computer programming is what makes it possible for us to do all the necessary actions on devices easily, quickly and no codes normally visible to ordinary users.
ASCII is the American Standard Code for Information Interchange, that is, all devices are coded the same so that the information is the same in one and the other.
Table of Extended Characters and ASCII Code Symbols
What are extended ASCII code characters?
Extended ASCII code characters is an update or development of ASCII code control characters and ASCII code printable characters.
We know then that the control characters are those that we cannot see when we execute an action, such as every time we press the “DEL” key and the selection is deleted, in this way we are giving a command through a code that is executed internally in seconds within the computerized system.
The ASCII code control characters we also use them when we hit the “WIN” or “MAC” logo key to start the menu.
On the contrary, the printable characters are those that we use and see, that is, are the graphical representation on the screen what you want to read and these letters, numbers or symbols are internally represented by numbers.
For example, we want to use the capital “A” followed by the lowercase “a”, the number that corresponds to the first in the table would be 65, and the one that corresponds to the second would be 95, to write “Aa” the computer assumes it like 9565.
Thus, devices are encrypted from the 80s, That was when the demand for computers increased and the need arose for information to be the same on any computer where it is needed.
Thus, the exchange of information is much more effective and efficient, otherwise what we see in a file on one device would not correspond to what we see on the other.
El ASCII code, it has gone through multiple adaptations and updates, normally the two mentioned above work with codes up to 7 bits, but the need arose to have special characters with which to represent the writing that we normally use.
In this point, was that it was decided to extend the code with special symbols up to 8 bits and the extended ASCII code characters are born.
These extended ASCII code characters belong to those that were called special, then including some basic signs such as the apostrophe above a letter for the correct accentuation of the word.
What are they used for?
The extended characters of ASCII code have assigned within their table, all the symbols that are necessary to make an effective communication and so that, the exchange of information was assertive.
Without these extended ASCII code characters, we would not be able to write a word with an accent mark correctly, nor would we be able to place umlauts.
Something extremely important and remarkable, as well as curious with the programming of the devices, is that, depending on the language, these extended ASCII code characters change.
However, the information can be read the same on all devices, a very clear example is that of the "Ñ", this symbol within the table is assigned with the number 165, but in another language such as English, the “ñ” is not used.
This not only includes extended ASCII code characters that are accents or umlauts, but symbols such as the end of the paragraph “¶”.
Also included is the Registered Trademark symbol “®”, and other common ones that are detailed within the table.
These symbols help us understand what we are perceiving without having to write as much, however, they are not only useful with language, they are just as important for mathematical calculations.
That's right, for division (÷), the function (f) and even for the addition (+) extended characters of ASCII code are used that are part of the activity of daily life.
How are extended ASCII code characters used?
The truth is that you use them daily without realizing it, but from the moment you type the word or symbol until it is projected onto the device on the screen.
This encoding that we do not see is the reason why we can exchange information today without even realizing it, so that we are able to see letters and extended characters of ASCII code without any type of number or code to interpret.
Using it is really very easy, you don't need to memorize the whole table.
You use these extended ASCII code characters very often, for example, when you want to write the word maña, which has a “ñ” in it.
If the “m” were represented by the number 77 being part of the printable characters, as well as the letter “a” represented by the number 41, and, in addition, we used one of the extended characters of the ASCI codeI as the “ñ” being the number 165, we have a set of numbers used to write the word “maña”
That is, while we make use of the keys and write "tomorrow" the computer receives this information as 774116541.
To get the most out of it, you can access these special characters from any operating system.
On windows
You can insert extended characters with the ALT key and using the numeric keyboard, once you activate it press ALT and do not release it, write the combination or code you require and that's it.
On Mac
Press CTRL + CMD + space and there will appear a keyboard, if you press Shift you will see all the letters in uppercase, but if you press Alt you will be able to access all the special characters, if it does not appear click on a symbol at the top right and select show keyboard viewer.
On Linux
It will be enough to start the menu, go to applications, accessories and character map to show you a box that will have all the printable and extended characters organized by tabs.
In this way, the extended ASCII code characters are extremely easy to use and you do not realize when you are using them since the information you perceive in a computer is the result of a set of processes that happen previously.
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