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COMMUNICATION TECHNOLOGY (Types Of Signals (Analogue Signals, Digital…
COMMUNICATION TECHNOLOGY
Types Of Signals
Analogue Signals
Digital Signals
Analogue-to-digital conversion
Periodic Signals
Random Signals
Telegraph and Telephone
Electrical Signals
Long Distances
Microphone+Speaker
Portability Technology
Wireless Technology
Comunication Systems
Transmitter
Medium
Message
Reciever
Wireless Transmission
Electromagnetic Spectrum
Radio Waves
Microwaves
Infared Waves
Ultraviolet Waves
Visible Light
X-rays
Gamma Rays
The Radio Spectum
Very Low Frequency
Medium Frequency
Low Frequency
Very High Frequency
High Frequency
Ultra High Frequency
Cable Transmition
Fibre Optic Cables
Circuit and Packet Switching
Coaxial Cables
Pair Cables
Television
3 Colours
Red, Green and Blue
Image more Resistant to Interference
Terrestrial Digital Television (TDT)
