In Analog instruments, there is an error due to parallax or other kinds of observational method. Error Rate: Error rate is another significant difference which separates Analog and Digital Communication.The equipment used in digital technology are compact in size and consumes less power. Hardware Flexibility: The hardware of analog communication system is not as flexible as digital communication.Digital communication offers more fidelity as compared to Analog Communication. Fidelity is the ability of the receiver which receives the output exactly in coherence with that of transmitted input. Fidelity: Fidelity is a factor which creates a crucial difference between Analog and digital communication.And Analog communication system requires less bandwidth thus more power. Since the bandwidth requirement in digital systems is more thus, they consume less power. Power Requirement: Power requirement in case of digital communication is less a compared to Analog communication.Analog signal requires less bandwidth for the transmission while digital signal requires more bandwidth for the transmission. Bandwidth: This factor creates the key difference between Analog and digital communication.Key Differences Between Analog and Digital Communication This is because if noise effects one of the points of the signal amplitude, we know the range in which that point lies because digital signal consists of discrete values. Thus, if noise effects mix with the digital signal, the original signal can be retrieved from the distorted signal. This is because the digital signal is not a continuously varying signal. The significant advantage of using Digital Communication is that it is not deteriorated by channel noise. Thus repeaters also maintain the SNR effectively. The repeaters intensify the information signal and suppress the noise signal. The digital communication system also consists of repeaters to intensify the signal which undergoes attenuation due to travelling a particular distance. PCM (Pulse Coded Modulation), DPCM are some of the digital modulation techniques. After the sampling and quantization, the digital signal so obtained is modulated by digital modulation techniques. Digital signals usually consist of signals with two states ON or OFF, i.e. The samples of Analog signal are taken, and they are quantized. The digital signal is formed by the sampling of the analog signal. This signal consists of discrete values rather than continuous values. Digital signals are represented by a square wave. Definition of Digital Communicationĭigital Communication is the one which uses digital signals for transmitting information between source and destination. Moreover, noise affects the Analog signal more than digital signal because analog signal is a continuous time-varying signal.
Thus, the signal to noise ratio starts getting degrade. The major drawback of Analog Communication is that the strength of the signal starts diminishing with the increase in the distance travelled. Thus, one modulator is required at the transmitter end, and one demodulator is connected at receiving end for retrieving the original signal. Then, this signal is transmitted through the channel. Modulation is the process of multiplying the low-frequency information signal with a high-frequency carrier signal. Although, we can also use it for long distance communication with the help of analog modulation technique such as amplitude modulation and angle modulation.
Then this signal is passed through the communication channel.Īnalog communication is appropriate for short distance communication. As voice, sound is non-electric in nature, it can be converted into electric form with the help of transducer. can be transferred through an analog signal.įirstly, the data needs to be converted into electrical form. Any type of data such as voice, sound etc. Analog signal possesses continuous varying amplitude with time. In analog communication, the data is transferred from transmitter and receiver with the help of analog signal.
DIFFERENCE BETWEEN DIGITAL AND ANALOG PORTABLE
Less Portable as the components are heavyĪnalog signal can be represented by sine wave.ĭigital signal is represented by square wave.Īnalog signal comprises of voice, sound etc. Hardware is flexible and less complicated than Analog system. Hardware is complicated and less flexible than digital system. The other differences between Analog and Digital Communication can be understood with the help of comparison chart and key differences.Ĭontent: Analog and Digital CommunicationĪnalog Communication is the technology which uses Analog signal for the transmission of information.ĭigital Communication is the technology which uses digital signal for the transmission of information.Įrror Probability is high due to parallax.
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