ASCII CODE AND EBCDIC CODE

Hello friends, today we learn about gray code and bcd code in it, so let's start

ASCII CODE AND EBCDIC CODE 

    ASCII CODE-: 

ASCII stands for “American standard code for information interchanges “, It has become a world standard alphanumeric code for micro-computer. It is a 7-bit code and it can represent maximum 27=128 different characters. These character represent 26 uppercase letter (A-Z), 26 lowercase letter (a-z), 10 digit(0-9), 33 special symbol character and 33 control characters.

The 7 bit of this code are divided into two parts. First 3 bit of left are called zone bits and next four bits of right side are called numeric bits.

ASCII CODE AND EBCDIC CODE
ASCII CODE AND EBCDIC CODE 

An 8 bits version of ASCII code is also available , which is know as USACC-II or ASCII-8. They can represent maximum of 256 characters.

EBCDIC code-:

EBCDIC stands for “Extended binary coded decimal interchanges”. It is basically used for large computer like a mainframe. It ia an 8-bit code and with the help of this code we can represent maximum 28=256 characters. The 8 bit of EBCDIC code is know as zone bits and last four bits are known as numeric bits.

    EBCDIC Table -:


ASCII CODE AND EBCDIC CODE
ASCII CODE AND EBCDIC CODE 

ASCII CODE AND EBCDIC CODE
ASCII CODE AND EBCDIC CODE 


Note: Values are based on the 0-255 scale. 

Example -: ASCII to EBCDIC Conversion, COBOL functions require a 1-256 scale;

 ASCII or EBCDIC character is represent by 2 hexadecimal digit. For example, ASCII character E is hexadecimal 45 or X'45'. To find the location of the ASCII character E , you can go down to row 4.  Second hexadecimal digit is 5, you can move across to column 5. point at which they meet the hexadecimal value X'C5'. This hexadecimal EBCDIC value for E is X'C5'. If you want the E to be represented by a different EBCDIC hexadecimal value you can edit this value in this table. When a transfer has completed and the data is converted to EBCDIC, the new value is used.

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