Page 189 - DEDU403_EDUCATIONAL_TECHNOLOGY_ENGLISH

Unit–22: Radio, Television and CCTV in Learning

22.3 Closed Circuit Television–CCTV Notes

Normally, in television broadcasts, academic programmes are first recorded in the studio and then

is relayed by transmitor. Programmes broadcasted by T.V. reciever antenna are shown on television.

Closed circuit Television broadcast is only confined to classrooms or school buildings, therefore it is
called as Closed Circuit Television. Relay reaches the TV or monitor through a co-axial cable. These
programme are either broadcasted directly or broadcasted after being recorded. Their objective is to

broadcast programme on already fixed episodes. Microwave have limited use it these programmes, so

its broadcasting is also limited to some specific area or audience.
In the field of teaching- training, it is a very succesful instrument for the development of teaching of

pupil teacher. It is an effiecient instrument to perform specific operation process in a medical college.

Write the expanded form of CCTV.

22.3.1 Characteristics of CCTV

The main characteristics of CCTV are—
In Closed Circuit television, information is transmitted to the reciever using a co-axial cable. So length
of cable reduce the distance. CCTV has an importance place in educational institutions. Some of its main
characteristics are as follows—
1. Such things which are difficult to view in the general classroom environment, it displays and

demostrates by enhancing objects.
2. From one organization to other wherever circuit is connected, it transmits the course from one
professor to another.
3. Development area of instruction has been increased due to CCTV
4. In educational institutions, objects and activities performed which are seen by all student, can be
displayed to them through CCTV and their nuances can be explained easily.

5. Educational institutions can include learning process according to their own schedule through
CCTV.
6. Lecture of good teacher can transmitted to other classes and other educational institutions through
CCTV which raise the level of teaching.
In developed countries, CCTV are widely used in educational programmes but it has low use in
developing countries like India.

Self-Assessment

3. State whether the following statements are True or False:
(i) Normally, in television broadcasts, academic programmes are first recorded in the studio and

then is relayed by transmitor
(ii) In Closed Circuit Television, broadcasting is not limited to class or school buildings
(iii) Development area of instruction has been increased due to CCTV

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