Types of coding schemes

Different types of coding schemes are as follows:

1. BCD Code

BCD stands for binary coded decimal. It is a 4-bit code. It means that each decimal digit is represented by 4 binary digits. It was used by early computers.

2. EBCDIC Code

EBCDIC stands for extended binary coded decimal interchange code. It is an 8-bit code. It is normally used in mainframe computers. It can represent 256 characters.

3. ASCII

ASCII stands for American standard code for information interchange. It was published in 1968 by ANSI (American National Standard Institute). It is the most widely used coding scheme for personal computers. The 7-bit code can represent 128 characters. It is not enough to represent some graphical characters displayed on computer screens. An 8-bit code can represent 256 characters. The extended 128 unique codes represent graphic symbols.

4. unicode

Unicode is a 16-bit code. It can represent 65536 characters. It has started to replace ASCII code. It can represent the characters of all languages in the world.