Therefore, we draw a straight line at positive level.īit 0 follows after bit 1, therefore, we draw a straight line at negative level. The bit that follows is a 1, represented by a positive voltage. In this case, we draw a straight line at positive level. The first bit is 1, and in relation to rule, bit 1 is represented by a positive voltage. We shall have an example of data 11001100. We take positive and negative voltages to represent bit 1 and 0 respectively. In Non-Return to zero Level, also abbreviated as NRZ-L, level of voltage determines the value of a bit. NRZ-Level and NRZ-Inverted are the two variations of Non return to zero scheme. Non Return to Zero signal involves both the positive and negative voltages. The types of encoding techniques include: Digital data to digital signals - This is what we will focus on.Digital data to analog signals - This includes Amplitude Shift Keying, frequency Shift Keying, and Phase Shift Keying.Analog data to analog signal conversion – This includes Amplitude Modulation, Phase Modulation, and Frequency Modulation.The different data encoding techniques that we will focus on include Non-Return to Zero Level, Non-Return to Zero, Non-Return to Zero Inverted, Bi-phase encoding, and Block encoding.įor data to be encoded, it has to be converted to signal variations. It will also talk about digital and analog data. It will emphasize more on the different data encoding techniques. This tutorial intends to cover how data to be transmitted on a network is encoded. For this reason, data is encoded in a way that is best understood by computers.ĭata encoding is the conversion of data into digital signals i.e. For a data packet to be appropriately transmitted on a network, it needs to be converted into the best and most reliable way of transmission.
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