by admin | Jun 7, 2015 | sem3
Pulse Code Modulation In a brief sentence, pulse code modulation is a method used to convert an analog signal into a digital signal. So that it can be transmitted through a digital communication network, and then converted back into the original analog signal. The PCM...
by admin | Jun 7, 2015 | sem3
Pulse Time Modulation In pulse-modulated systems, as in an analog system, the intelligence may be impressed on the carrier by varying any of its characteristics. In the preceding paragraphs the method of modulating a pulse train by varying its amplitude was discussed....
by admin | Jun 7, 2015 | sem3
Pulse Amplitude Modulation Pulse Amplitude Modulation is “pulse shaping”. Essentially, communications engineers realize that the shape of the pulse in the time domain can positively or negatively affect the characteristics of that pulse in the frequency...
by admin | Jun 7, 2015 | sem3
Serial and Parallel Interfaces In telecommunication and computer science, serial communication is the process of sending data one bit at a time, sequentially, over a communication channel or computer bus. This is in contrast to parallel communication, where several...
by admin | Jun 7, 2015 | sem3
Data communication Hardware The transfer of data over a communications circuit requires appropriate hardware and software. Once these are working you can use various applications for the following services and operations:- Internet Having registered with an Internet...
by admin | Jun 7, 2015 | sem3
Error Detection and Correction There are many reasons such as noise, cross-talk etc., which may help data to get corrupted during transmission. The upper layers work on some generalized view of network architecture and are not aware of actual hardware data...
