Lecture #1: Basic Concepts of Data and Computer Security

Computer
an electronic device which is capable of receiving information (data) in a particular form and of performing a sequence of operations in accordance with a predetermined but variable set of procedural instructions (program) to produce a result in the form of information or signals.
Computer is derived from the word compute which means compute or calculating in right manner. it can acess, store, and retrived the large amount of data without intervention of human.
Data
- Collection of data objects and their attributes
- An attribute is a property or characteristic of an object
Examples: eye color of a person, temperature, etc.
- A collection of attributes describe an object.
Object is also known as record, point, case, sample, entity, or instance
Information
Collection of organization data or preparing data to take the decision , where
Data + Processing = Information
Example: book is data while my book is information.