Mobile Phone. How Stuff Works


A Mobile phone is an electronic device used for mobile telecommunications over a cellular network of specialized base stations known as cell sites. A cell phone offers full Duplex Communication and transfer the link when the user moves from one cell to another. As the phone user moves from one cell area to another, the system automatically commands the Mobile phone and a cell site with a stronger signal, to switch on to a new frequency in order to keep the link.

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Smart Card


A Smart Card, also called Chip Card or Integrated Circuit Card is a type of pocket-sized card with embedded integrated circuits which can process data. This card can receive input which is processed by way of the ICC applications and delivered as an output. A smart card is a plastic card embedded with a computer chip that stores and transacts data between users.

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