| Abstract |
Megaphone usually has its external wired microphone permanently connected
to it. During handling the microphone, people are usually not concern about the
wire. If the microphone wire is stressed, the wire may be damaged internally
causing damage to the microphone. As a result, in order to overcome this
problem, external jacks are created. Besides, by doing some modifications, this
megaphone can act as a external speaker and can be connected to the cell
phone and computer. This megaphone also uses rechargeable battery so that
it can save the environment because the amount of non-rechargeable battery
wasted can be reduced. |