Computers have to agree before they can talk
Computer communication is the exchange of data between devices connected in a network. For it to work, they need shared conventions called communication protocols.Communication: How Computers Exchange Data
Some systems can only speak one way
Simplex systems send signals in only one direction, like radio or airport display screens. Half-duplex systems take turns, while {full-duplex}(Systems where both sides can send information at the same time.) systems let both sides send data at the same time.Communication: How Computers Exchange Data
