The History of the Two Way Radio
achsan uddin Radios are one of the means of communication that are used widely and popularly. One of the best things about a radio is that it can be easily carried from…
history
History of Mobile Phones
The Electromagnet was invented in 1825 by William Sturgeon, a British electrician. This was followed by the invention of the electric telegraph by Samuel Morse that transmit electrical signal over…