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ASCII stands for American Standard Code for Information Interchange.
Computers can only understand numbers, so an ASCII code is the numerical
representation of a character such as 'a' or '@' or an action of some sort.
ASCII was developed a long time ago and now the non-printing characters are
rarely used for their original purpose. Below is the ASCII character table
and this includes descriptions of the first 32 non-printing characters.
ASCII was actually designed for use with teletypes and so the descriptions
are somewhat obscure. If someone says they want your CV however in ASCII format, all
this means is they want 'plain' text with no formatting such as tabs, bold or
underscoring - the raw format that any computer can understand. This is usually
so they can easily import the file into their own applications without issues. Notepad.exe creates ASCII text, or in MS Word you can save a file as 'text only' |
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Extended ASCII Codes
As people gradually required computers to understand additional characters
and non-printing characters the ASCII set became restrictive. As with most
technology, it took a while to get a single standard for these extra characters
and hence there are few varying 'extended' sets. The most popular is presented below.
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