Transmitting and receiving involves the transfer of data and information within and between information systems. It includes various forms of communication like email, radio, phones, and faxes. There are different types of data transmission including serial and parallel transfer. Hardware components like modems and networks facilitate transmitting and receiving, while software manages the transfer of files between computers using communication protocols. Non-computer tools that transmit and receive information include the postal system, telephone networks, radio, television, and faxes.