Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
School of Business Eastern Illinois University Additional questions about Data & Signals Data and signals 2 What is the basic function of a modem? To convert digital data into analog signals and back again. What is the basic function of a codec? To convert analog data into digital signals and back again. In what kind of translator device digital encoding techniques, like NRZ-L or Differential Manchester, could be implemented? And why these kind of devices are necessary? In devices like DSU because digital data must be converted to digital signals for proper transmission over a medium. Data and signals What is the spectrum of a signal? The range of frequencies that a signal spans from minimum to maximum. How does baud rate differ from bit rate? Baud rate is the number of clock cycles per second. The Bit rate, on the other hand, is the number of bits per second. In each clock cycle one or more bits could be sent The following formula shows the relation between the two: Bit Rate = Baud Rate * Bits per clock cycle Why we need to use a translator when both device (or source of data) and line are digital? Usually the device and the line use different signaling formats (different bit rate, different number of possible states, different voltage level, etc.). So, a translator is needed to convert between the two different formats. 3