The transfer of data from one point to another is known as digital communication. Optical fibers, storage media, computer buses, wireless communication channels and copper wires are a few types of channels used in digital communications. The data in digital communication is represented as an electrical voltage, microwave, radiowave and infrared signal. Synchronous and asynchronous transmissions are the two types of data communication. The transmission speeds at both the sending and receiving end of the transmission are synchronized in synchronous transmission by using clock signals. Asynchronous serial communication uses start and stop bits to signify the beginning and end of a transmission. Digital communications is an upcoming field of science that has undergone rapid development over the past few decades. Some of the diverse topics covered herein address the varied concepts and applications that fall under this category. Scientists and students actively engaged in this field will find this book full of crucial and unexplored concepts.