This is Presented By Vishnu, Who s member of KanchiLUG... It is created by Open Office Impress

1. INTRODUCTION TO TELEVISION
- K. Vishnu MCA
KanchiLUG Member

2. Television history was not
overnight and not invented by a
single inventor.

3. MECHANICAL TELEVISION

4. - John Logie Baird (1920)
The idea of using arrays of
transparent rods to transmit
images for television.

5. - Charles Francis Jenkins (1923)
Radiovision claimed to have
transmitted the earliest moving
silhouette images.

6. ELECTRONIC TELEVISION
CRT

7. Electronic television is based on the
development of the cathode ray tube.

8. Now it is the picture tube
found in modern TV sets.

9. MAIN INVENTORS OF CRT TELEVISION

10. Vladimir Kosma Zworykin (1925)

11. Philo T. Farnsworth (1939)

12. 1. Glass Tube
2. Electron Gun
3. Electron Beam
4. Upper & Lower Leds
5. Shadow Mask
6. Phosporous Coated Screen

15. LCD
TELEVISION

16. * An LCD TV is a flat panel TV
* It based on liquid crystal display
* Inter active properties
# liquid crystals
# light

18. * The liquid crystals are broken down into small particles.
* These smaller particles are known as pixels.
* Crystals are located in the middle of two electrodes.