________the physical manifestation of information as produced by the source

______signal is a physical quantity that varies with time, usually in a smooth and continuous fashion

It includes the components, equipment that is being utilized to execute the communication process

In 1837, ________ perfected the Line Telegraphy.

He introduced the theory of signal transmission in telegraphy

Packet Switching was introduced in ______

________ is the entity that is to be exchanged between different computers

_______ are nothing but electrical or electromagnetic representation of data

To be transmitted, data must be transformed to ________ signals

A system that allows transfer of information reliably

Although digital representations are discrete, the information represented can be sounds, images, and other measurements of continuous systems.

_______is the transmission of digital pulses between two or more points in a communication system

________is the transmission of digital modulated analog carriers between two or more points in a communication system

The messages produced by the source are converted into a sequence of _______

The process of efficiently converting the output of either an analog or digital source into a sequence of binary digits is called ________

The sequence of binary digits from the source encoder is passed to the _________

The purpose of the channel encoder is to introduce some _________ in the binary information sequence

The _______serves as the interface to the communication channel.

The ________ processes the channel-corrupted transmitted waveform and reduces the waveforms to a sequence of numbers that represent estimates of the transmitted data symbols

The average probability of a _____ at the output of the decoder is a measure of the performance of the demodulator–decoder combination

The _______ accepts the output sequence from the channel decoder and attempts to reconstruct the original signal from the source.

Thefunction of the difference between the original signal and the reconstructed signal is a measure of the ______ introduced by the digital communication system

Electrons when propagated either in a guided media or free space creates ______

Analog signals can have ________ number of values in a range