Digitalise your documents and make huge repository for future reference.

1. P.DEVI PRASAD

2. A library:-
(from French "librairie"; Latin "liber" =
book)
Is an organized collection of resources
made accessible to a defined community
for reference or borrowing.
It provides physical or digital access to
material, and may be a physical building or
room, or a virtual space, or both.

3. A library's collection can include books
periodicals, news papers, manuscripts,
films, maps, prints, documents,
microform, CDs, Cassettes, Video tape,
DVDs, e-books, audio books, data base
and other formats.

4. A digital book and an ebook are not the
same as often mistaken, they are entirely
different species of the same animal.
Digital books
Digital books, sometimes also called
electronic books or PDF books, are
scanned, digital facsimile of standard
printed, published books

5. Ebooks
Ebooks are digital books too, but they
were designed and written for the
internet. Many, if not most ebooks were
never officially "published" at all.

6. An electronic library is a library
consisting of electronic materials and
services. Electronic materials can include
all digital materials, as well as a variety of
analog formats.
Physical site and/or website that provides
24-hour online access to digitized
audio, video, and written material.

7. A digital library is a library in which
collections are stored in digital formats
and accessible via computers.
One of the best examples of a digital
library is the U.S. Library of
Congress American MemoryMemory collection

8. Digital/electronic libraries
are virtual library
Eg. NCSTRL Networked
Computer Science Technical
Report Library

9. Open Access Resources
Open-access literature is digital
literature that is available on the web,
free of charge, and free of most copyright
and licensing restrictions.
Committing to open access requires
dispensing with the financial, technical
and legal barriers.

10. The only constraint on reproduction and
distribution, and the only role for
copyright in this domain, should be to
give authors control over the integrity of
their work and the right to be properly
acknowledged and cited.

11. 11th
century manuscript of “Beowulf,” an
epic poem describing the heroic
adventures of a Scandinavian warrior
which was donated to the British Museum
in 1700 and was nearly destroyed in a fire
30 years later
In 1993, the British Library initiated the
“Electronic Beowulf Project” to capture,
enhance, and preserve forever this
cultural artifact in digital form.

12. Through the 1990s, digital library
projects were largely experimental
activities.
In 1999 these projects began expanding
internationally when NSF linked its
digital library research program with
similar activities being undertaken by
JISC, resulting in the JISC-NSF
International

13. Since then, many other groups have become
involved in the expansion of digital library
technologies and techniques,
including the European Union,
Association for Computing Machinery (ACM),
the Institute of Electrical and Electronics
Engineers (IEEE),
the International Federation of Library
Associations (IFLA),
the American Library Association (ALA),
the Coalition for Networked Information (CNI),
and the Digital Library Federation (DLF).

14. Software:-
There are a number of software packages
for use in general digital libraries
(Digital Library Software).

15. Institutional repository software:- which
focuses primarily on ingest, preservation
and access of locally produced
documents.

16. Repository:-
Repositories store and manage digital
objects and other information.
A large digital library may have many
repositories of various types, including
modern repositories, legacy databases,
and Web servers
The interface to this repository is called
the repository access protocol (RAP).

17. Digitization
In the past few years, procedures for
digitizing books at high speed and
comparatively low cost have improved
considerably with the result that it is now
possible to digitize millions of books per
year. Google Book Scanning Project is
also working with libraries to offer
digitize books pushing forward on the
digitize book realm.

18. Large scale digitization projects are
underway at Google, the Million Book
Project, and Internet Archive.
With continued improvements in book
handling and presentation technologies
such as Optical Character Recognition and
ebooks, and development of alternative
depositories and business models, digital
libraries are rapidly growing in popularity

19. Digital libraries frequently use the Open
Archives Initiative Protocol for Metadata
Harvesting (OAI-PMH) to expose their
metadata to other digital libraries.
Protocols like Z39.50 are frequently used in
distributed searching

20. Most digital libraries provide a search
interface which allows resources to be
found. These resources are
typically deep web (or invisible web)
resources since they frequently cannot
be located by search engine, crawlers.

21. Some digital libraries create special
pages or sitemaps to allow search
engines to find all their resources.
search engines like Google, Scholar,
Yahoo and Scirus and can also use OAI-
PMH to find these deep web resources

22. Each item in the digital library is
catalogued with a unique resource
identifier that allows cross referencing
across subject boundaries

23. The digital library is an ever growing
living repository of information that is
constantly updated by a number of
sources.

24. The advantages of digital libraries as a
means of easily and rapidly accessing
books, archives and images of various
types are now widely recognized by
commercial interests and public bodies
alike.

25. Both types of library require cataloguing
input to allow users to locate and retrieve
material.

26. Cost of maintaining a digital library can
be much lower than that of a traditional
library
An important advantage to digital
conversion is increased accessibility to
users.

27. Digital libraries may be more willing to
adopt innovations in technology
providing users with improvements in
electronic and audio book technology as
well as presenting new forms of
communication such as wikis and blogs

28. No physical boundary:-
The user of a digital library need not to
go to the library physically; people from
all over the world can gain access to the
same information, as long as an Internet
connection is available.

29. Round the clock availability A major
advantage of digital libraries is that
people can gain access 24/7 to the
information.
Multiple access. The same resources
can be used simultaneously by a number
of institutions and patrons.

30. Information retrieval.
The user is able to use any search term
(word, phrase, title, name, subject) to
search the entire collection. Digital
libraries can provide very user-friendly
interfaces, giving clickable access to its
resources.

31. Preservation and conservation.
Digitization is not a long-term
preservation solution for physical
collections, but does succeed in
providing access copies for materials
that would otherwise fall to degradation
from repeated use.

32. Space.
Whereas traditional libraries are limited
by storage space, digital libraries have
the potential to store much more
information, simply because digital
information requires very little physical
space to contain them and media storage
technologies are more affordable than
ever before

33. Added value.
Certain characteristics of objects,
primarily the quality of images, may be
improved. Digitization can enhance
legibility and remove visible flaws such
as stains and discoloration
Easily accessible.

34. Reading digital libraries is different
because more concentration is required.
The temptation to click to something else
is too much!

35. There is so much information just a click
away that “hyper-extensive” reading is
encouraged. (Hyper-extensive reading is
short burst of shallow reading which is
encouraged by hyperlinks)

36. Digital preservation
Digital preservation aims to ensure that
digital media and information systems
are still interpretable into the indefinite
future.
Each necessary component of this must
be migrated, preserved or emulated

37. The digital library contains a built-in
Proxy Server and search engine so the
digital materials can be accessed using
an internet browser

38. Copyright and licensing
Digital libraries are hampered by
copyright law . The re-publication of
material on the web by libraries may
require permission from rights holders.

39. In the year 2010 it was estimated that
twenty-three percent of books in
existence were created before 1923 and
thus out of copyright. Of those printed
after this date, only five percent were still
in print as of 2010. Thus, approximately
seventy-two percent of books were not
available to the public.

40. Metadata creation
In traditional libraries, the ability to find
works of interest was directly related to
how well they were catalogued.
While cataloguing complex and born-
digital works require substantially more
effort

41. To handle the growing volume of
electronic publications, new tools and
technologies have to be designed to
allow effective automated semantic
classification and searching.

42. Digital Library of India
Hosted by:
Indian Institute of Science Bangalore
in co-operation with
CMU, IIIT, NSF, ERNET and MCIT
for the Govt. of India and 21 participating
centers.

43. eShelf :- offline virtual library stores
content digitally and is accessible by
computers.
eShelf retrieves comprehensive yet
accurate information that is 100% secure
and virus-free, across the intranet.

44. Greenstone :-is a suite of software for
building and distributing digital library
collections. It provides a new way of
organizing information and publishing it
on the Internet or on CD-ROM.
Greenstone is produced by the New
Zealand Digital Library Project at the
University of Waikato

45. The advent of computers half a century
ago set in motion a new paradigm of
information storage and retrieval.
Early researchers worked on methods of
classifying information for ease of
retrieval in a computer based system.

46. There has been a convergence of a number
of developments in computer technology in
the last five years which has significantly
affected the way computers can be used to
access information.
These developments are:
Emergence of CDROMs (Compact Disk
Read Only Memories) and now DVDROMs
(Digital Versatile Disk Read Only Memories)
with very high information storage
capability

47. One DVDROM can store upto 7.5 Giga bytes
( 7.5 × 109
bytes) (To store a typical 500
page book 0.25 Mbytes are needed). The
cost of these storage devices is very low,
around ten paise per Megabyte.
Continuous increase in capacity of magnetic
disks which can be used for on-line access.
Today desk top PCs have 500GB/1TB disks.
Storage capacity of disks is doubling every
twelve months, at constant price

48. There has been a convergence of a number
of developments in computer technology in
the last five years which has significantly
affected the way computers can be used to
access information.
These developments are:
Emergence of CDROMs (Compact Disk
Read Only Memories) and now DVDROMs
(Digital Versatile Disk Read Only Memories)
with very high information storage
capability

49. Development in computer network
technology :-
which has facilitated interconnecting
computers not only within the country but
also across countries leading to a world
wide computer network. Network
bandwidths are also doubling almost every
9 months at constant price Wireless
technology also rapidly developed. This
allows anywhere – any time access to
information even when a person is mobile.

50. Method of digitizing:-
compressing and storing text, audio,
graphics and video data have
continuously improved. Standards have
emerged for audio compression, e.g.MP3
format, graphics (JPEG) and video data
compression(MPEG4). Standards allow
easy interchange of these data.

51. Advent of very powerful processors which
can process multimedia information very
fast. Processing speeds have been
doubling every 18 months at constant price.
Availability of high resolution video
terminals which can display information on
multiple windows. Revolutionary
developments in display technologies to
facilitate easy reading has matured leading
to devices such as Kindle of Amazon and
Sony book reader which use e-ink
technology and are battery driven.

52. When all the above developments are
combined we have a powerful
technology to efficiently store multimedia
information available in geographically
dispersed locations, index them for easy
retrieval and access the information from
anywhere in the world using a Personal
or laptop computer connected to the
internet.