Sign and Magnitude Representation

For representing a number ,we identify

with a sign bit either positive(+) or negative(-) and the magniude of any string.In case of a positive number the sign bit 0 is default and for a negative number the sign bit holds a 1 with thaeir most significant bit(MSB) 

 

 

UNICODE

It officialy states that

                Unicode provides a unique number for every charectrer,

 --------no matter what the platform ,

---------no matter what the program,

---------no matter whatever the language 

The UNICODE Standard has incoperated Indian scripts under the group named Asian Scripts.The Indian scripts included areDevnagari,Bengali,Gurumukhi,Gujara-ti,Oriya Tamil,Telugu,Kannada and Malayalam.

 

NUMBER SYSTEM

Decimal number system

there are 10 digits (0 to 1)

the base of the number system is 10.

Binary number system

The binary number system has only two digits 0 and 1.Computers use binary system because the electrical devices can understtand only "on"(1) or "off"(0).The base of Binary Number system is 2.

Octal Number system 

base-8.(0----7)

Hexadecimal number system

base is 16

digits are 0----9

and A,B,C,D,E which corresponds (10---15)

ASCII 

It stands for American Standard Code for Information Interchange .It is a 7= bit binary code which alllows 128 different

characters to be represented .It become s altogether easier to exchange documents either between different computers or between different program on the same computer with the help of ASCII

ISCII

In 1991,The bureau of Indian Standard Code for Information Interchange (ISCII),the ISCII standard that was evolved by a standardization commitee.

This is an 8- bit code capable of coding 256 charACTERS