4) Describe desktop publishing

Desktop publishing involves using page layout software to create publication documents on a computer. Users could use different typefaces, specify various margins and justifications, and embed illustrations and graphs directly into the text. DTP would usually be for point of sale displays, promotional items, trade show exhibits, retail package designs, outdoor sings etc.

Explain its history

1984 - The Apple Macintosh debuts.
1984 - Hewlett-Packard introduces the LaserJet, the first desktop laser printer
1985 - Adobe introduces PostScript, the industry standard Page Description Language (PDL) for professional typesetting.
1985 - Aldus develops PageMaker for the Mac, the first "desktop publishing" application.
1985 - Apple produces the LaserWriter, the first desktop laser printer to contain PostScript.
1987 - PageMaker for the Windows platform is introduced.7
1990 - Microsoft ships Windows 3.0

How does DTP differ from word processing?

Word processing software is for composing documents. DTP software helps finish those documents as they provide extensive features necessary for print publishing, and it combines graphics and text.