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प्रश्न
Distinguish between ‘Analog and Digital signals’.
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उत्तर
It is continuous signal, which varies continuously with variable may be time or distance etc.
E.g. Sound of human
Digital Signal:-
It is a type of signal which has only two values high or low. In digital high mean 1 and low means zero.
E.g. Temperature of day
Maximum 30°C ⇒ 1
Minimum 15°C ⇒ 0
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संबंधित प्रश्न
Which of the following frequencies will be suitable for beyond-the-horizon communication using sky waves?
(a) 10 kHz
(b) 10 MHz
(c) 1 GHz
(d) 1000 GHz
Frequencies in the UHF range normally propagate by means of:
(a) Ground waves.
(b) Sky waves.
(c) Surface waves.
(d) Space waves.
Digital signals
(i) Do not provide a continuous set of values,
(ii) Represent values as discrete steps,
(iii) Can utilize binary system, and
(iv) Can utilize decimal as well as binary systems.
Which of the above statements are true?
(a) (i) and (ii) only
(b) (ii) and (iii) only
(c) (i), (ii) and (iii) but not (iv)
(d) All of (i), (ii), (iii) and (iv).
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