GSM: Global System for Mobile Communication is used to send and receive phone calls. One of the benefits of GSM is the addition of a SIM card (subscriber identification module) this little chip slips into the back of GSM and provides the user’s personal information. GSM also paved way for the use of text messaging.
Cellular Networks: This is a radio network that covers different large areas to provide radio coverage over a wider area than the area of one cell. It is made up of a cell site or base station. It has increased capacity, reduced power usage, a large coverage area, and reduced interference from other signals.
Satellite Communication: This is an artificial satellite stationed in space for the purpose of telecommunication. They can also be used for planes, ships, TV, and radio broadcasting. The ground-based antennas that are directed toward the satellite can pick signals and operates effectively without the need for expensive equipment to track the satellite’s motion.
Television: TV is used for transmitting and receiving moving images. It is a source of entertainment and news. The availability of DVDs, video cassettes, and laser disks makes it possible to view broadcast materials and recorded ones.
Internet: This is a global network of interconnected computers that allow users to share information along multiple channels.
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