As you know, a computer stores information in binary form, representing it as a sequence of ones and zeros. In order to translate the information into a form convenient for human perception, each unique sequence of digits when displayed is replaced with the corresponding symbol.
One of the systems of correlation of binary codes with printed and control characters is ASCII coding.
At the current level of computer technology, the user is not required to know the code of each specific character. However, a common understanding of how coding is carried out is extremely useful, and even necessary for some categories of specialists.
ASCII creation
In its original form, the encoding was developed in 1963 and then twice over the course of 25 years.
In the original version, the ASCII character table included 128 characters, later an extended version appeared, where the first 128 characters were saved, and codes with the eighth bit involved were mapped to previously missing characters.
Over the years, this encoding has been the most popular in the world. In 2006, Latin 1252 took the lead, and from the end of 2007 to the present, Unicode has held the leading position.
ASCII Computer View
Each ASCII character has its own code, consisting of 8 characters, representing zero or one. The minimum number in this representation is zero (eight zeros in the binary system), which is the code of the first element in the table.
ASCII + , – , .
, , . . , , , ( – ), , .
ASCII 0 31, 127 . 33.
95 , , , : «» «» ASCII.
, ASCII.
, 0-31 127 . 32 , 33-47 58-64 .
65- 90-. , – 97- 122-. (91-96 123-126) , , .
, . ASCII.
ASCII
, , , .
8- . , , , .
ASCII- . , , , , , .
ASCII , , , .
US-ASCII .
ASCII 128, 256 , , 128 8- . (128-255- ).
ASCII . , , .
70- , , , ., . 8- 8, 128 ASCII .
8 . , .
ASCII
256, . 90- «», , ASCII, .
ASCII . , 128-255 , , .
ASCII .
, . 128 ASCII .
In 2000, ASCII was the most popular encoding on the Internet and was used on 60% of Google-indexed web pages. By 2012, the share of such pages fell to 17%, and Unicode (UTF-8) took the place of the most popular encoding.Thus, ASCII is an important part of the history of information technology, but its use in the future is seen as unpromising.