Page 16 - DLIS105_REFERENCE_SOURCES_AND_SERVICES

Unit 1: Reference and Information Sources

One-to-a-Few Notes
This happens in a classroom, small gatherings, and so on. In a class room the teacher speaks and the
students listen.

One-to-Many
This happens in big meetings, conferences, and so on. Before elections you have seen meetings
addressed by political leaders. Here, the political leader speaks and hundreds and thousands of
listeners listen.

Many-to-Many
This is seen in meetings when a VIP (say, a minister, government official, etc.) meets common people
to listen to their grievances, complaints, and so on. The persons, one-by-one, voice their grievances,
and the VIP takes note of them and tells them about the action he/she is going to take. This also
happens when a VIP calls for a press conference. The reporters put questions to the VIP and he/she
answers. The same scene is seen in an interview also. The candidate is asked various questions by
the members of the interview board which he/she answers.

Many-to-Many
This happens in a group discussion, round table conference, and so on. Here, one-by-one everyone
speaks and others hear and react.

Audio

These are the media using which either we speak, or listen, or both speak and listen. In a big
conference, we use microphones to speak so that others can hear the voice clearly. This is a device
used only for speaking. We use record players, radio, etc., to listen to music, news, speech, and so
on. These devices are only for hearing. A telephone, walkie-talkie, etc., are devices through which
we can both speak and hear. A radio ever since its discovery has been a great source of information
for one and all. It has been a great help for the blinds for their education, awareness of current
events, and entertainments.

Visual
Visual media comprise among others photographs, paintings, drawings, blueprints, slides, and
transparencies. You all know about photographs, paintings, and drawings. Hence, we shall discuss
here only about blue prints, slides and transparencies.

Blueprints–‘A blueprint is a photographic copy of an early plan for a building or
machine with white lines on a blue background’ [Cambridge International Dictionary:
p140].

Many libraries of industrial enterprises, consultancy firms, etc., possess a huge collection of
blueprints. The blueprints are frequently required by engineers, technicians and others for assembling
or repairing a machine, erection of a plant, construction or extension of a building, and so on. Not
much attention has been paid by librarians so far towards the classification, cataloguing, storage,
etc., of these materials, which are of great value for an industrial organisation from the point of
view of information.

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