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BRIEF HISTORY OF COMPUTER In the hold days, pebbles and stones were used for counting items, and marking on the well was the convection for storing the counts. The discovery of zero by Indian mathematicians laid the foundation of the number system. Abacus, the first manual calculating device was developed in and around 3000 BC and used in many countries particularly as toys for learning while playing. It uses beads to represent decimal numbers. The Japanese call it SOROBAN. In early seventeenth century, john Napier, a Scottish scientist who practiced mathematics as a hobby, developed another calculating device known as 'Napier's Bones'. He used a set of eleven rods called 'bones' with numbers carved on them. Napier is also well known for development of logarithms in 1614. This idea of logarithm (combination of two Greek words: LOGOS means ratios and ARITHMOS means numbers) by Napier, gave birth to a calculating device called 'SLIDE RULE' which was used...

What is Computer Computer is an electronic device that is designed to work with  Information. The term computer is derived from the Latin term ‘ compute ’, this means to calculate or programmable machine. Computer cannot do anything without a Program. It represents the decimal numbers through a string of binary digits. The Word 'Computer' usually refers to the Center Processor Unit plus Internal memory. Who was the father of computer? Charles Babbage is called the " Grand Father " of the computer. The First mechanical computer designed by Charles Babbage was called Analytical Engine. It uses read-only memory in the form of punch cards. Charles Babbage How it's work: Computer is an advanced electronic device that takes raw data as input from the user and processes these data under the control of set of instructions (called program) and gives the result (output) and saves output for the future use. I...

  Introduction to Computer We are living in the age of computers. Most of our daily activities are being influenced by the use of computers. IT and computers have become an integral part of our lives. A computer is an automatic electronic machine that converts raw data into useful information with the help of certain instructions. These instructions are issued in form of a program (a set of instructions is called a program).  A program is a sequence of instructions,  written in a specific computer language, which operates on data to perform a certain task.(or) A computer program is a collection of instructions that can be executed by a computer to perform a specific task. A computer program is usually written by a computer programmer in a programming language. Input process output model Computer input is called data and the output obtained after processing it, based on the user's instructions is called information. Raw facts and figures which can be processed using...