Unit 1 Learning Outcome 3: Explain Digital Data Representation used in Computer

EXPLAIN DIGITAL DATA REPRESENTATION USED IN COMPUTER

Digital data, in information theory and information systems, are discrete, discontinuous representations of information or works, as contrasted with continuous, or analog signals which behave in a continuous manner, or represent information using a continuous function. The word digital comes from the same source as the words digit and digitus (the Latin word for finger), as fingers are often used for discrete counting. The term is most commonly used in computing and electronics, especially where real-world information is converted to binary numeric form as in digital audio and digital photography.

How to convert hexadecimal to binary :

For example:

We want to convert hexadecimal number 65B2 to binary. For this we will replace each hexadecimal digit to binary values using the above table:

Hexadecimal number:  6    5    B    2

Binary values:      (0110) (0101) (1011) (0010)

So (65B2)16 = (0110010110110010)2