Synchronous TransmissionIn synchronous transmission, the bit stream is combined into longer "frames," whichmay contain multiple bytes. Each byte, however, is introduced onto the transmissionlink without a gap between it and the next one. It is left to the receiver to separate thebit stream into bytes for decoding purposes. In other words, data are transmitted as anunbroken string of 1s and Os, and the receiver separates that string into the bytes, orcharacters, it needs to reconstruct the information.In synchronous transmission, we send bits one after another without start or stopbits or gaps. It is the responsibility of the receiver to group the bits.Figure 4.35 gives a schematic illustration of synchronous transmission. We havedrawn in the divisions between bytes. In reality, those divisions do not exist; the senderputs its data onto the line as one long string. If the sender wishes to send data in separatebursts, the gaps between bursts must be filled with a special sequence of Os and Is thatmeans idle. The receiver counts the bits as they arrive and groups them in 8-bit units.
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