#include <stdio. h > int  main() {   printf( "Hello World!" );    return   0 ; } Optional default code goes here

<?php $t = date( "H" ); if  ($t <  "20" ) {    echo   "Have a good day!" ; } ?> Optional default code goes here

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When we type some letters or words, the computer translates them in numbers as computers can understand only numbers. A computer can understand the positional number system where there are only a few symbols called digits and these symbols repr…

Software is a set of programs, which is designed to perform a well-defined function. A program is a sequence of instructions written to solve a particular problem. There are two types of software − System Software Application Software System …

History Detail of the back of a section of ENIAC , showing vacuum tubes . 8   GB microSDHC card on top of 8   bytes of magnetic-core memory (1   core is 1   bit ). In the early 1940s, memory technology often permitted a capacity of a few…

In computing , a process is the instance of a computer program that is being executed by one or many threads . There are many different process models, some of which are light weight, but almost all processes (e.g. entire virtual machines ) are …

Difference between Input and Output devices INPUT DEVICE OUTPUT DEVICE It is a hardware device and is used to key in the data, instructions or commands, into the computer It is a hardware component, and it uses the data that is has r…

Following are some of the important output devices used in a computer. Monitors Graphic Plotter Printer Monitors Monitors, commonly called as Visual Display Unit (VDU), are the main output device of a computer. It forms images from tiny dots,…

Following are some of the important input devices which are used in a computer − Keyboard Mouse Joy Stick Light pen Track Ball Scanner Graphic Tablet Microphone Magnetic Ink Card Reader(MICR) Optical Character Reader(OCR) Bar Code Reader Optical …

A computer is an electronic device which accepts data as input, performs operations on the data based on the instructions stored in the memory and produces output. General representation of a computer is as shown below: A computer is made up of tw…

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