Unicode Tables v4
Ascii was very simplistic, and so was extended by adding 'extended' sets by various manufacturers. Apart from being confusing this was still restricted to 256 characters. Now computers are more widely established around the world the need to show other characters such as Japanese and Chinese languages along with various symbols became more important. Unicode is an attempt to standardise every character possible and the latest version (4) is shown below. Tables are in PDF format so you will need Adobe Acrobat Reader to view them.