Introduction of computer

-
Introduction of computer :



     The year of 20 and 21st century has witnessed rapid developments in science and technology influencing every aspect of human life. One of the greatest things that man has ever created is, perhaps, 'the Computer'. The computer is truly an amazing machine. Computer is being used in areas of administration, medicine, education, sports, defence, shops, home, markets and many more. Computer and Information Technology (IT), in recent years, has become an integral part of our life. We can see it almost everywhere.

    A computer is an electronic machine that helps to process data. It is used to solve problems relating to almost all fields such as education, home, medicine, science and technology, research, designing, publishing, communication etc.
 
    A computer is an information-processing and information-accessing tool. This means that a computer accepts some information or data from the outside world. It processes it to produce a new information.
 
   Information processing is the essence of computing.
 
   Meaning of Computer : The word computer has derived from an English word 'Compute', which means 'to calculate'.

   Computer is an electronic device which processes the input informations according to the given set of instructions, called program.
 

   Blaise Pascal had developed the first mechanical calculator in 1642 AD, which is called 'PascaLene'.

    British scientist Charles Babbage was the first person to conceive an automatic calculator or a computer in 1833. He is called the 'Father of modem computer'.

   The credit of developing first computer program goes to Lady Ada Augusta, a student of Babbage.

    Herman Holorith prepared an electronic tabulating machine in 1880, which was automatically functional with the help of Punch Card. This Punch Card is used in computer even today.
   Howard Ekin developed the first Mechanical Computer 'Mark - I' in 1937.
   J.P. Ekart and John Moschley invented world's first electronic computer 'ENIAC-I' in 1946 and paved the way for first revolution in the field of calculating machine or computer. Electronic Valve or Vaccum Tube was used as a switch in the computer.

    John Van Newman invented EDVAC (Electronic Descrete Variable Computer) in 1951, in which he used Stored Program. The credit of using Binary System in computers also goes to him. Indeed Mr. Newman contributed most in the development of computer and thus gave a right direction to the Computer Revolution (Second Revolution).



 

Comments

Post a Comment

Popular posts from this blog

Arduino Tutorial Program Structure

-
Image
  Arduino Tutorial Program Structure TECH KNOWLEDGE MASTER, Program Structure I n this chapter, we will study in depth, the Arduino program structure and we will learn more new terminologies used in the Arduino world. The Arduino software is open-source. The source code for the Java environment is released under the GPL and the C/C++ microcontroller libraries are under the LGPL. Sketch  − The first new terminology is the Arduino program called “ sketch ”. Structure Arduino programs can be divided in three main parts:  Structure, Values (variables and constants), and  Functions . In this tutorial, we will learn about the Arduino software program, step by step, and how we can write the program without any syntax or compilation error. Let us start with the  Structure . Software structure consist of two main functions − ◆ Setup( ) function ◆ Loop( ) function Void setup ( ) { } PURPOSE   −  The   setup()   function is called when a sketch starts. Use it to initialize the variables, pin mod
Read more

Java Tutorial About JAVA

-
Java Tutorial About JAVA TECH KNOWLEDGE MASTER, Java Tutorial Java is a high-level programming language originally developed by Sun Microsystems and released in 1995. Java runs on a variety of platforms, such as Windows, Mac OS, and the various versions of UNIX. This tutorial gives a complete understanding of Java. Java programming language was originally developed by Sun Micro systems which was initiated by James Gosling and released in 1995 as core component of Sun Micro systems' Java platform (Java 1.0 [J2SE]). The latest release of the Java Standard Edition is Java SE 8. With the advancement of Java and its widespread popularity, multiple configurations were built to suit various types of platforms. For example: J2EE for Enterprise Applications, J2ME for Mobile Applications. The new J2 versions were renamed as Java SE, Java EE, and Java ME respectively.  Java is − ◆ bject Oriented  − In Java, everything is an Object. Java can be easily extended since it is based
Read more

Python chapter 1 Hello, World

-
Image
Python chapter 1 Hello, World TECH KNOWLEDGE MASTER, What you should know You should know how to edit programs in a text editor or IDLE, save the file and run the file once the files have been saved to your disk. Printing Programming tutorials since the beginning of time have started with a little program called "Hello, World! The syntax changed in Python 3.0. If you are using Python 3.0, you should be reading  Non-Programmer's Tutorial for Python 3  instead. So here is the Python 2.6 example: print "Hello, World!" If you are using the command line to run programs then type it in with a text editor, save it as  hello.py  and run it with  python hello.py Otherwise go into IDLE, create a new window, and create the program as in section  Creating and Running Programs . When this program is run here's what it prints: Hello, World! Now I'm not going to tell you this every time, but when I show you a program I recommend that you type it in
Read more