The word “communication” comes to us from the Latin word communicare, which simply means “to share.” At its core, communication is the process of sharing information, whether it’s a baby crying to signal a need or a person using language to share complex ideas. In the world of technology, we share information over vast distances using communication systems.

To do this, we need a signal, which can be defined as “a source of energy which transmits some information.” Think of it as the vehicle that carries a message from a sender to a receiver. These signals come in two fundamental types: Analogue and Digital.

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Now that we know the two basic types of signals, let’s explore their core differences in how they represent information.

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