Today, computers are all around us. from desktop computers to Smartphone they're changing the way we live our lives. But have you ever asked yourself "What exactly is a computer?" A computer is an electronic machine which process data into information. the computer sees data as 1's and 0's but it knows how to combine them into more complex things, such as photographs, movies, a website, a game and much more. computer is a combination of hardware and software. Mechanical parts of computers are called hardware i.e. monitor and keyboard. Software is any set of instructions which tells hardware what to do i.e. web browsers, media player and word processor etc.