Author: NIPCT

Computers are broadly classified into two categories depending upon the logic used in their design as: Analog computers In analog computers, data is recognized as a continuous measurement of a physical property like voltage, speed, pressure etc. Readings on a dial or graphs are obtained as the output, ex. Voltage, temperature; pressure can be measured…

The top five search engines are: 1. Google Search 2. Bing! Search 3. Yahoo! Search4. Baidu! Search5. Ask.com Search To understand and appreciate why the search engines have gained popularity, let us know the basic working of Internet search engines. There’s loads of information available on the World Wide Web, but how do we get…

The computer system hardware comprises of three main components — 1. Input/Output (I/O) Unit, 2. Central Processing Unit (CPU), and 3. Memory Unit. The I/O unit consists of the input unit and the output unit. CPU performs calculations and processing on the input data, to generate the output. The memory unit is used to store…

The computer has evolved from a large—sized simple calculating machine to a smaller but much more powerful machine. The evolution of computer to the current state is defined in terms of the generations of computer. Each generation of computer is designed based on a new technological development, resulting in better, cheaper and smaller computers that…

A Computer is a group of electronic devices used to process data. In the 1950s, computers were massive, special–purpose machines that only huge institutions such as governments and universities could afford. Primarily, these early computers performed complex numerical tasks, such as calculating the precise orbit of Mars or planning the trajectories of missiles or processing…

Computer system is made up of a number of components. These are 1. Input devices 2. Memory unit 3. Central processing unit 4. Output devices Central Processing Unit (CPU) The central processing unit (CPU) is where the actual processing takes place. This is where the calculations are performed and logical functions are carried out. The…

Computer derives its name from the word Compute that means calculation. It can be said that Computer is a device used for calculation. Nowadays Computer is not only limited to computation, but also used for making phone calls, maintaining databases, listening songs, viewing movies etc, so a more formal definition of Computer is required. Computer…

In this chapter, we introduce the field of data visualization. We will see why we need data visualizations and how we can use the Web to distribute them to achieve our communication goals. We understand why D3.js is the de facto standard for data visualizations in the browser. We review the origins of the library,…

Advantages of Computers Speed The speed of a computer is measured in terms of the number of instructions that it can perform or execute in a second. The speeds of computers are measured in milli­seconds (10~3 sec), micro-seconds (10*6 sec), and nano-seconds (10~9sec). Computers are superfast machines and can process millions of instructions per second.…