Hello guys, you are learning C language Here you many times hear name ASCII code and other codes now today in my this post you will learn about all codes.
firstly i tell you that i will tell about 4 codes.....................
BCD Code:
( Binary coded decimal )
Here each digit of decimal no. is represented by it binary equivalent.Four bit code that represents one of the ten decimal digits from 0 to 9.
Ex.
(37)base 10 is represented as 0011 0111 using BCD code, rather than (100101) base 2 in straight binary code.Thus BCD code requires more bits than straight binary code.Still it is suitable for input and input operations in digital systems.
EBCDIC:
(Extended binary coded decimal for interchange code)
In this code it is possible to represented 256 different characters.It is an eight bit code.8-bit alphanumeric code developed by IBM, supports 256 symbols.It was mainly used in IBM mainframe computers.
EBCDIC is a character encoding set used by IBM mainframe.Unlike virtually every computer system in the world which uses a variant of ASCII, IBM mainframes and midrange system such as the AS/400 tend to use a wholly incompatible character set primarily designed for ease of use on binary coded Decimal (BCD), so the contiguous characters in a alphanumeric range are formed up in blocks of up to 10 from 0000 binary to 1001 binary,EBCDIC has a wider range of control characters than ASCII.
ASCII Code:
( American standard code for information interchange)
It represent all 128 English character along with all the special character . Most text editors and word process usually support ASCII code.It is 7-bit or 8-bit a alphanumeric code.7-bit code is standard ASCII supports 127 characters. Standard ASCII series starts from 00h to 7Fh, where 00h-1Fh are used as control characters and 20h-7Fh as graphics symbols.
8-bit code is extended ASCII supports 256 symbols where special graphics and math's symbols are added.
Extended ASCII series starts from 80h-FFh.
Ex. A=65
B=66
a=97
b=98
UNI Code:
Now a days most of the computers use a new code called unicode and it defines an international character set.The unicode can represent all of the character found in all human languages.Thus becomes possible because Unicode uses 16-bits to represent a character. This is a code which allows interaction and processing of data in all local language of user. This requires support local language character set. It may be a various format like -UTF8( unicode test format ) or UTF-16.
Thanks....................
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