Application Software: An application software always works under a system software. These softwares are generally a set of one or more programmes, designed to solve a specific problem, or do a specific task e.g. An application software for payroll processing produces pay slips as the major output, and an application software for processing examination results produces mark sheets as the major output along with some other statistical reports. And also if a person is writing a program to solve his/her personal and particular problems is also comes under the application software. These programs included in an application software package are called application programmes and who made these programs are also known as application programmers. The most commonly known application software are 1. Word Processing Software: A word processing software enables us to make use of a computer system for creating editing, viewing, formatting, storing retrieving and painting documents (written