How computer works?

Alone, a computer cannot operate with just its hardware, it need to be told what to do. A computer software is a list of instructions that tells a computer how to perform a specific task.

Operating System

An operating system is a collection of programs the allows the computer to communicate with the hardware and to work together. It also control the running of the other programs. This operating system is either built into the computer memory or loaded from a disk when you turn on the computer. Example of popular operating system includes, microsoft xp, microsoft vista, redhat, ubuntu.

Utility programs

An operating sustem consist of different utilities programs. Functions of these utilities program is to perform housekeeping and maintence task for the computer. One example is to recover a word document that you had deleted on accident.

Application programs

This programs perform specific tasks that user can accomplish like typing document, designing a poster, creating a website. They include, word proccessing programs, database programs, spreadsheet programs, computer games, and many more.