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ASCII is a simple (and increasingly obsolete) code which maps alphanumeric characters to numbers in the 0..255 range. Thus, any phrase expressed as a series of these alphanumeric characters can be expressed as a series of bytes with the corresponding numeric values, one byte per character.
For example, the letter A is represented by a byte of numerical decimal value 65.
It is characteristic for the ASCII code that it supports a limited alphabet of 256 different characters. While this might seem much in light of the fact that the 26 characters cover the A-Z alphabet, codes are assigned to lower-case and upper-case characters, digits, punctuation marks, a wide range of other characters including some simple symbols, and a range of 'foreign characters.'
With today's demands on localized software and support for the local alphabet, the ASCII code becomes increasingly obsolete because it cannot support a great number of non-English alphabets.
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What is the default file extension for a ASCII text file?
.txt is a common choice.
What does Java use instead of ASCII?
ASCII and Java are 2 totally different things. ASCII is a naming convention where a certain letter, number, or punctuation mark is a specific keyboard code (Carriage Return, CR, is code 31, Line Feed 14, Capital A 96). Java is a programming language that handles text in multiple formats as needed, Unicode, EBDIC, ASCII. The two are not intertwined.
What is ascii value of EOF?
There is no ascii value for EOF. The constant EOF is a special value, not representing any character, but indicating an eof-of-file or error condition when using stream I/O. On the other hand, there is an ascii charactor end-of-file, <CTRL>Z, 26, or 0x1A which, in the DOS era, indicated the end of file in a text file, but this is not the same as the run-time library constant EOF.
How do you distinguish between a text file and a binary file?
You can distinguish between binary and text files, and for the most part even identify what type of binary file, by using the "file" command. For example:~$ file unknownfileunknownfile: PNG image data, 155 x 155, 8-bit/color RGBA, non-interlacedThis tells you that the file is a PNG file by reading metadata and/or magic numbers in the file. When used on a text file, the command will return "ASCII text" or "Unicode text."
What are the codes called that surround the HTML text?
they tell the computer what to do.
