- When transmitting digital signals is it necessary to transmit some harmonics in addition to fundamental frequency?
- For asynchronous transmission, is it necessary to supply some synchronizing pulses additionally or to supply or to supply start and stop bit?
- BPFSK is more efficient than BFSK in presence of noise. Why?
- What is meant by pre-emphasis and de-emphasis?
- Explain 3 dB cutoff frequency? Why is it 3 dB, not 1 dB?
- Explain ASCII, EBCDIC?
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