Download Applications and systems software: навчальний посібник.

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Applications and Systens Software
Web directories make it easy for users to find Web sites they may be interested in.
Using the windows feature, an operating system (or operating environment) can display several windows on a computer screen, each showing a different application program such as word processing, spreadsheets, and graphics.
Word processing software allows a person to use a computer to easily
create, edit, copy, save, and print documents such as fetters, memos, reports, and
manuscripts.
Most popular desktop publishing programs are WYSIWYG, thereby making them relatively easy for people to use.