2.2 Computer Fundamentals
2.1 Data Representation
The data stored in the computer may be of different kinds, as follows:
1. Numeric data (0, 1, 2, …, 9)
2. Alphabetic data (A, B, C, …, Z)
3. Alphanumeric data—Combination of any of the symbols—(A, B, C… Z), (0, 1… 9), or
special characters (+,–, Blank), etc.
All kinds of data, be it alphabets, numbers, symbols, sound data or video data, is repre-
sented in terms of 0s and 1s, in the computer. Each symbol is represented as a unique combi-
nation of 0s and 1s.
This chapter discusses the number systems that are commonly used in the computer. The
number systems discussed in this chapter are—(1) Decimal number system, (2) Binary num-
ber system, (3) Octal number system, and (4) Hexadecimal number system. ...