Tutorials for teachers- Essential softwares for your computers

This tutorial is about essential software programs which you may need to use your computer effectively. Most of the software programs are available at no cost.

Whenever I re-install my 'Windows' I keep a folder ready at 'software' drive which is named as 'Essential software' as I need those programs to install every time I install new 'Windows'. Let's learn basics about 'Windows'
Windows is the most popular PC operating system in the world. An operating system, or OS, is a software program that enables the computer hardware to communicate and operate with the computer software. Without a computer operating system, a computer would be useless. Other programs can't run on a PC until the OS is loaded and running. Windows 98, Windows XP, and now Windows 7 or 8 are examples of operating systems.