RFID is one growing technology these days, it is used in different kinds of businesses from supply chain to payments, all can be tracked down with it. RFID is an abbreviation of Radio Frequency Identification is a technology that uses electromagnetic fields to identify and track the objects through the tags. This is how RFID…
Walkie Talkies are a product of the World War 2, when the whole world was a battleground and every country was fighting. Means of communication among the army personnel, nurses and doctors, police and other paramilitary staff were really weak. It was then that Donald L. Hings came up with the idea to invent a…
PA is the abbreviation for the words Public Address, which means that a sound is projected to a large number of people which is louder than the original sound and can make the speech audible to every single person in the crowd. The idea of PA speakers in our minds is that of the large…