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Saturday, 1 June 2019

Communication

The process of data transfer from one person to another person is called communication. All the living organisms in the earth communicate. If two persons are far away (they are not near with respect to each other), then the message from one person needs to be modulated and transmitted to the other person. For doing like this it requires one transmitting antenna and one receiving antenna. The message from one person will be encoded, modulated and transmitted to the other through a transmitting antenna. The receiving antenna will collects the transmitted signal and it decodes the encoded data. The way of communication can be either one sided (example T.V, radio etc) or two way communication (Mobile phones).

The communication may be either analog or digital communication.
Analog means we are transmitting the signal in the analog form.
Digital communication means we are transmitting the signal in the digital form.

Digital Transmission

■ Digital Transmission System Block Diagram

■ Types of Pulse Modulation

■ Digital Carrier Modulation Techniques

■ BPSK System with Block Diagram

■ ISDN - Principles, Objectives, Services, Architecture, Channels

Satellite Communication

■ Satellite Communication Overview

Audio and Video Systems

■ Audio and Video Systems

■ Nature of Sound

■ Properties of Sound

■ Frequency Response and Equalization

■ Microphones Types

■ Loud Speakers Types

■ Magnetic Recording and Reproduction of Sound

■ Need of DC and AC Biasing

■ Recording of CD (Compact Disc)

■ Hi - Fi and Stereo

■ Dolby System

Introduction to TV

■ TV Camera Tubes

■ Sequential and Interlaced Scanning

■ Calculation of Approximate Bandwidth in 625 Line Systems

■ TV Standard and Frequency Requirements

■ Blanking, Retrace, Synchronizing and Equalizing Pulses

■ Composite Video Signal

■ Positive and Negative Modulation

■ Monochrome TV Transmitter

■ Monochrome TV Receiver

■ Picture Tube


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