Write short note on ASCII and unicode?

Answer 1

In computer memory, character are represented using predefined character set. Historically 7 bit American Standard Code for Information Interchange (ASCII) code, 8 bit American National Standards Institute (ANSI) code and Extended Binary Coded Decimal Interchange Code(EBCDIC) were used. These coding scheme represents selected characters into 7 or 8 bit binary code. These character schemes do not represent all the characters in all the languages in uniform format. At present Unicode is used to represent characters into the computer memory. Unicode provides universal and efficient character presentations and hence evolved as modern character representation scheme. Unicode scheme is maintained by a non-profit organization called Unicode consortium. Unicode is also compatible with other coding scheme like ASCII. Unicode use either 16 bits or 32 bits to represent a character. Unicode has capability represent characters from all the major languages in use currently across the world.