Back in the middle of the 20th century, when Claude Shannon introduced his information theory , not only did he revolutionize the science of signal processing, but he also deeply influenced a cohort of other disciplines, starting from computer science and artificial intelligence, and ending with cognitive psychology. One of the ideas coming from information theory was that communication systems are made of modules connected through limited-capacity communication channels .
Human–Device Communication Channel
The basic concept in information theory is the communication system . A communication system comprises: