To communicate, we need at least two parties one known as the sender and another who will listen or technically called as receiver. Even when we human talk face-to-face to each other our voice travels through air before it strikes the listener’s ear diaphragms. Well, this is not all that is required, most important is the content that we share while talking to each other and the language in which the contents are shared.
This is fine as long as we are physically very near to each other, but to communicate over a long distance, we would require the use of technology.
Five Types of Computer Components
The different computer components required to communicate over long distance are described below.
Message: The message is the information to be communicated. Popular for of information include text, numbers, pictures, audio, video.
Sender: The sender is the device that sends the data message. It can be a computer, workstation, telephone, handset, video camera and so on
Receiver: Is the device that receives the message. It can be a computer, workstation telephone, handset, television etc.
Transmission Medium: The transmission medium is a physical path by which a message travels from sender to the receiver. Some examples are twisted-pair wire, coaxial cable, fiber-optics cable, radio wave etc.
Protocol: A protocol is a set of rule that govern data communication. It represents an agreement between the communicating devices. Without a protocol, two device may be connected but not communicating, just as a person speaking French cannot be understood by two persons speaking Hindi.