What makes Unicode and ASCII diffrent from one another?
ASCII defines 128 characters, which map to the numbers 0–127. Unicode defines (less than) 221 characters, which, similarly, map to numbers 0–221 (though not all numbers are currently assigned, and some are reserved). Unicode is a superset of ASCII, and the numbers 0–128 have the same meaning in ASCII as they have in Unicode. For example, the number 65 means "Latin capital 'A'". Because Unicode characters don't generally fit into one 8-bit byte, there are numerous ways of storing Unicode characters in byte sequences, such as UTF-32 and UTF-8.
@=_- the extended ASCII chart defines up to 256/
@David this helped me understand, hope it does you too: https://www.quora.com/What-is-the-difference-between-ASCII-and-unicode-characters-difference-between-UTF-8-and-UTF-16
ASCII is for English. While as the technology developing, many different languages(like French,Chinese,Japanese) are used in the computer system.ASCII is not big enough to cover all these languages letters so we have Unicode to solve this problem.
Unicode has 17 planes Andi it has 1114112 characters but it has 10%of sapce us occupied it is developed in different languages.ASCII has 256 chacters it is in English only .
ASCII is used in only English language.but unicode it is used in different languages