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In digital communications, a digit is either a one or a zero, or an "on" or an "off" signal. The wave shape that is composed of "on's and off's" is the square wave.

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What is required to convert an analogy sound wave into digital form?

What one needs is a bit of hardware circuitry called a Analogue to Digital Converter (ADC). These work by sampling the analogue electrical waveform.


What digital multi meter setting should be used to measure voltage?

There are settings for AC and DC voltages. If they are not marked as such, the DC setting might be parallel lines and the AC marking may be a cycle of a sine wave (Wavy line).


What is the digital oscilloscope used for?

A cathode ray oscilloscope (CRO) is used to see the waveform of a repetitive electronic signal. The signal is amplified or attenuated as required and used to deflect an electron beam in the vertical direction. This electron beam is deflected in the horizontal direction at a suitable speed. The electron beam impinging on a phosphorescent screen enables the viewer to see the wave shape of the signal. The operation is similar to that of a TV.


What is the difference between the AM modulation and ASK modulation?

This is hard to explain. AM means amplitude modulation, while ASK is amplitude-shift keying. AM is usually analog as it is modulated based on the strength of the signal, though you can use it to send a digital signal. ASK represents digital data as variations in the amplitude of a carrier wave. Any digital modulation technique will represent the data using a finite number of different signals. While AM is used mostly for radio and television, ASK is used for telegraph signals, transmission across telecommunications equipment, and fiber optics.


How monostable multivibrator can be used to generate?

we can use monostable multivibrator.But generally its o/p is a square wave so to get a pulse type waveform,we may use differentiator after monostable multivibrator....

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What is psk?

See the related link below.


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