Word Processing Softwere

Word Processing Softwere
Word processing software is used for creating documents. Drafts, letters, reports, essays, write-ups etc can be created using word processing software. Earlier, Word Star was being used widely for this purpose. Sidekick and Word Perfect are also used for drafting letters. However, the most commonly used word processing package in the world is Microsoft Word, which will be discussed later in this book. 
SPREADSHEETS

Spreadsheet is a computer application that simulates a paper worksheet. It displays multiple cells that together, make up a grid consisting of rows and columns, each cell containing either alphanumeric text or numeric values. Spreadsheets are frequently used for financial information because of their ability to re-calculate the entire sheet automatically after a change to a single cell is made. 
MICROSOFT EXCEL
Microsoft had been developing Excel on the Macintosh platform for several years to the point, where it has developed into a powerful system. A port of Excel to Windows 2.0 resulted in a fully functional Windows spreadsheet.Starting in the mid 1990s and continuing through the present, Microsoft Excel has dominated  the commercial electronic spreadsheet market. 
PRESENTATION PROGRAMS
Microsoft PowerPoint is a presentation program developed by Microsoft. It is part of the Microsoft Office suite and runs on Microsoft Windows and Apple's Mac OS X computer operating systems. PowerPoint is widely used by business people, educators, students and trainers and is among the most prevalent forms of persuasive technology. Beginning with Microsoft Office 2003, Microsoft revised the branding to emphasize PowerPoint's place within the office suite, calling it Microsoft Office PowerPoint instead of just Microsoft PowerPoint. The current versions are Microsoft Office PowerPoint 2007 for Windows and 2008 for Mac.
GRAPHICS PROGRAMS
Computer graphics are graphics, which are created with the aid of computers and the representation and manipulation of pictorial data by a computer. The development of computer graphics has made the application more user-friendly. It is also easier to understand and interpret many  types of data Developments in computer graphics had a profound impact on many types of media and revolutionized the animation and video game industry. 
The term computer graphics includes everything on computers that is not text or sound. Today nearly all computers use some graphicsand users expect to control their computer through icons and pictures rather than just by typing. Computer graphics has the following features: 
•  Representation and manipulation of pictorial data by a computer 
•  Development of technologies used to create and manipulate such pictorial data 
•  Digitally synthesizing and manipulating visual content 
Today computer-generated images touch many aspects  of our daily life. Computer imagery is found on television, in newspapers, in weather reports and during surgical procedures. A well-constructed graph can present complex statistics in a way that is easier to understand and interpret. Such graphs are used to illustrate papers, reports, thesis and other presentation material. A range of tools and facilities are available to enable users to visualize their data.