Before entering in to the details of devices; let us understand what is a personal Computer (PC)? The word “computer” which means to calculate. So a computer is normally considered to be calculating devices that can perform arithmetic operations at…

1.     Business Data Processing Business Data Processing constitutes the largest segment of computer used. Computer are used for all basic organizational tasks like Management Transaction Processing Control Operations Decision Making Computer assist Business and commercial organization in stock control, processing…

Computer can be classified on the basis of its Usage and Size. 1.  Usage-Wise Classification (a)  Special Purpose Computer These are designed for specific class of application. In this type of computer the instruction set is permanently stored in the…

Computer can be classified on the basis of different factors such as circuits and the task performance capabilities. Under this classification, computers have been classified into three categories:- Analog computers Digital computers Hybrid computers 1.     Analog Computers Analog computer are…

Development of Computer took place in different phases and each phase can be viewed as a distinct generation. 1.     First Generation of Computer First generation Computer uses: Time period 1945 to 1954 Technology used Vacuum tubes/Thermionic Value technology for their…

History of Computer The earliest device that qualifies as a digital computer is the “ABACUS” also known as “SOROBAN”. This device permits the user to represent number by position of the beads on a rack. Simple addition and subtraction can…

Introduction The 21st century believer “Information is Power”. There are only two type of people in this world –one, who are informed and the second who are not informed. Information is a vital resource in development activities of any society….