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Unformatted text preview: re used to present information in text form. Computers
are widely used for text processing.
Hardware Requirements for Text
Text processing using computers generally involves the following hardware
devices (see Chapter 9 for a description of some of these I/O devices):
1. Keyboards are most commonly used to input text data.
2. OCRs (Optical Character Recognizers) are used to codify printed text for
direct input of printed text to computers.
3. Computer screens are used to display text information.
4. Printers are most commonly used to output text in hard copy form.
Software Requirements for Text
In addition to the above listed devices, the following text processing capabilities
are highly desirable ii multimedia computer system for better presentation and use
of text information:
Text editing. Text editors and word processing packages are used to
generate, edit and props layout a text document.
2. Text style. Presentation of text information can be made more effective by
using text of various sizes, fonts and styles (bold, italics, shadow, etc.). For
example, newspapers use a good combination of all these styles to better highlight
more important news than less important ones. Similarly, book like the one you
are now reading, a combination of various text styles are used to put more
emphasis on certain words or phrases than the remaining text.
3. Text searching. Usage of text information can be greatly enhanced by text
searching feature. This feature allows the user to enter a word or phrase and
quickly finds and displays that part of the where the word or phrase appears in the
text information with the word or phrase highlighted. It is equivalent to searching
for a word in a book's index, and then going to the indicated page or pages for
more information. However, this process is much faster in a computerized text
information. Almost all word processing packages have this feature. Several
software having this feature are also available on the Internet that help in
searching desired information from the Internet. 4. Hy...
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This document was uploaded on 04/07/2014.
- Spring '14