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प्रश्न
Differentiate between Analog and Digital communication.
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उत्तर १
The signal (current or voltage) in the form of continuous, time-varying voltage or current are called continuous or analogue signals. Shows a pulse waveform in which only discrete values of voltages are possible. It is convenient to use binary mumbers to represent such signals.
उत्तर २
An analog communication system uses analog signals for the transfer of information whereas a digital communication system uses digital signals for the transfer of information. In analog communications, signals are consist of continuous values but in digital communications, signals are consist of discrete values.
संबंधित प्रश्न
Frequencies in the UHF range normally propagate by means of:
(a) Ground waves.
(b) Sky waves.
(c) Surface waves.
(d) Space waves.
Block diagram of a receiver is shown in the figure:
(a) Identify ‘X’ and ‘Y’.
(b) Write their functions.
Distinguish between ‘Analog and Digital signals’.
Write briefly any two factors which demonstrate the need for modulating a signal. Draw a suitable diagram to show amplitude modulation using a sinusoidal signal as the modulating signal.
A TV tower has a height of 100 meter. If the coverage range is to be made three times then the height of the tower should be increased by.
The area of the region covered by the TV broadcast by a TV tower of 100 m height is (Radius of the earth = 6.4 × 106 m):
Long distance short-wave radio broadcasting uses
Broadcasting antennas are generally
Broadcast band in which FM lies is ______.
Would sky waves be suitable for transmission of TV signals of 60 MHz frequency?
